Updated on 2025/08/16

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写真a

 
Sayuri Shimizu
 
Organization
Graduate School of Data Science Department of Health Data Science Lecturer
Title
Lecturer
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Papers

  • Hysterectomy for postpartum hemorrhage in Japan: Diagnostic code validation and nationwide descriptive analysis. International journal

    Eishin Nakamura, Tadahiro Goto, Shigetaka Matsunaga, Akihiko Kikuchi, Yasushi Takai, Sayuri Shimizu

    The journal of obstetrics and gynaecology research   51 ( 8 )   e70019   2025.8

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    AIM: Hysterectomy is a life-saving procedure for severe postpartum hemorrhage (PPH), but reports on postoperative mortality are limited. This study aimed to describe the rates of hysterectomy and associated mortality in PPH patients using the Diagnosis Procedure Combination (DPC) database, Japan's largest inpatient database. METHOD: We first validated the accuracy of PPH diagnostic coding at a tertiary perinatal center, then conducted a nationwide descriptive analysis using DPC data from April 2018 to March 2023. The DPC database includes over half of all acute care hospital admissions in Japan. PPH cases were identified using International Statistical Classification of Diseases and Related Health Problems, 10th Revision codes and blood loss data. We examined hysterectomy rates and postoperative mortality, including a subgroup excluding cases with conditions requiring planned hysterectomy during cesarean section (e.g., placenta previa, accreta, uterine rupture, and cervical cancer). RESULTS: The validation study showed high accuracy of PPH coding, with a sensitivity of 97.8% and specificity of 99.7%. Among 209 555 PPH cases, 1835 (0.88%) underwent hysterectomy, with a mortality rate of 0.87% (16 deaths). After excluding 23 039 cases with indications for planned hysterectomy, 681 of 186 516 cases (0.36%) required hysterectomy, with a higher mortality rate of 2.2%. CONCLUSIONS: The DPC database reliably identifies PPH cases. Hysterectomy was performed in 0.88% of all PPH cases, with higher mortality in emergency cases after excluding planned procedures.

    DOI: 10.1111/jog.70019

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  • Point-of-care testing for diagnosing hypofibrinogenemia in postpartum hemorrhage: Systematic review and meta-analysis. International journal

    Eishin Nakamura, Takahiro Mihara, Yuriko Kondo, Hisashi Noma, Sayuri Shimizu

    Thrombosis research   251   109339 - 109339   2025.7

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    BACKGROUND: Postpartum hemorrhage (PPH) can rapidly cause hypofibrinogenemia, requiring prompt coagulation factor replacement. Point-of-care testing (POCT) is gaining interest for early diagnosis for hypofibrinogenemia, despite limited evidence. This systematic review evaluated the diagnostic accuracy of POCT for hypofibrinogenemia in PPH. MATERIALS AND METHODS: A literature search was conducted using MEDLINE, Embase, Cochrane, and Web of Science. Studies using POCT for PPH diagnosis, both observational and interventional, were included. Risk of bias was assessed using the QUADAS-2 tool. A meta-analysis was performed using the Reitsma bivariate random-effects model for three POCT types: dry hematology, thromboelastography, and thromboelastometry. The diagnostic accuracy was evaluated using a summary Receiver Operating Characteristic (ROC) curve and area under the curve (AUC). RESULTS: Nine articles, including 16 studies with a total of 2902 patients, were analyzed. The dry hematology group had only two studies, preventing data pooling. Thromboelastography (4 articles, including 10 studies with 1386 patients) showed a sensitivity of 0.80 (95 % CI: 0.75-0.84), specificity of 0.90 (0.85-0.93), and AUC of 0.81 (0.77-0.85). Thromboelastometry (4 articles, including 4 studies with 1394 patients) showed a sensitivity of 0.89 (0.74-0.96), specificity of 0.84 (0.63-0.94), and AUC of 0.93 (0.83-0.95). CONCLUSIONS: Thromboelastography and thromboelastometry demonstrated high diagnostic accuracy for hypofibrinogenemia in PPH. However, evidence for dry hematology was insufficient. POCT may enable rapid and accurate diagnosis of hypofibrinogenemia in PPH.

    DOI: 10.1016/j.thromres.2025.109339

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  • Regional Disparities in Incidence, Therapeutic Approaches, and In-hospital Mortality of Critical Limb Ischemia in Japan.

    Manabu Nitta, Kiwamu Iwata, Makoto Kaneko, Kiyohide Fushimi, Shinichiro Ueda, Sayuri Shimizu

    Journal of atherosclerosis and thrombosis   2025.6

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    AIM: This study investigated regional disparities in the incidence, management, and in-hospital outcomes of critical limb ischemia (CLI) in Japan to inform standardized care practices. METHODS: We conducted a retrospective cohort study using the nationwide Diagnosis Procedure Combination database, including patients ≥ 18 years old who were discharged from acute-care hospitals between April 2018 and March 2020. Patients with CLI were identified using ICD-10 codes and restricted to those undergoing invasive treatments including endovascular therapy (EVT), bypass surgery, or amputation. Regional differences in patient demographics, in-hospital management, and outcomes were analyzed across seven regions in Japan. RESULTS: In total, 19,699 records were identified. CLI admissions per million population were highest in the Kyushu region (112.1) and lowest in the Kanto region (59.9). The proportion of patients with a body mass index (BMI) <18.5 kg/m2 ranged from 17.8% (Kanto) to 23.9% (Kansai), while the proportion with a BMI ≥ 30.0 kg/m2 ranged from 3.3% (Kyushu) to 8.2% (Okinawa). The proportion of patients requiring dialysis ranged from 33.8% in the Chugoku-Shikoku region to 38.2% in the Okinawa region (P = 0.005). Anti-platelet agents were prescribed to 82.1% of patients with CLI, whereas statins were prescribed to 36.1% of patients. The EVT rates varied from 67.6% (Hokkaido-Tohoku) to 84.8% (Kansai) (P<0.001), while the amputation rates varied from 22.2% (Kansai) to 33.4% (Chugoku-Shikoku) (P<0.001). The in-hospital mortality rates varied from 5.7% (Chugoku-Shikoku) to 10.9% (Okinawa) (P = 0.001). CONCLUSIONS: This study revealed significant regional disparities in CLI incidence, management, and outcomes across Japan. These findings highlight the need for standardized, evidence-based care strategies that address regional disparities to improve outcomes for patients with CLI.

    DOI: 10.5551/jat.65621

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  • Association Between Intraoperative Periarticular Injection of Triamcinolone and Early Postoperative Infection in Total Knee Arthroplasty: An Analysis of a Japanese Nationwide Database. International journal

    Shingo Kurihara, Chikamasa Ichita, Tadahiro Goto, Kazuhisa Hatayama, Kiyohide Fushimi, Sayuri Shimizu

    The Journal of arthroplasty   2025.4

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    BACKGROUND: The safety of intraoperative periarticular triamcinolone injection in total knee arthroplasty (TKA) remains unclear. This study aimed to assess the association between periarticular injection of triamcinolone during primary TKA and complications, including early postoperative infection. METHODS: A Japanese nationwide database was used to identify adults who underwent primary TKA between April 2016 and March 2022. Patients were divided into triamcinolone and control groups. The primary outcome was reoperation for infection within 90 days from primary TKA. Secondary outcomes included diagnosis of postoperative infection, wound complications, deep vein thrombosis (DVT), pulmonary embolism (PE), in-hospital death, and readmission within 90 days. Propensity score matching was performed to adjust baseline differences. During the study period, 242,571 cases underwent primary knee arthroplasty. Among 212,427 eligible TKA patients, 15,229 (7.2%) were in the triamcinolone group and 197,198 (92.8%) were in the control group. RESULTS: Overall, there were 551 reoperations for infection within 90 days (0.26%), including 61 (0.40%) patients in the triamcinolone group and 490 (0.25%) in the control group. Propensity score matching yielded 14,683 pairs. The triamcinolone group had a higher incidence of reoperation for infection, with a risk ratio (RR) of 1.67 (95% confidence interval [CI]: 1.10 to 2.53) and risk difference of 0.16% (95% CI: 0.03 to 0.29). Diagnoses of infection (RR: 1.25 [95% CI: 1.09 to 1.44]) and wound complications (RR: 1.18 [95% CI: 0.99 to 1.39]) were more frequent in the triamcinolone group, while DVT incidence was significantly lower (RR: 0.69 [95% CI: 0.65 to 0.73]). No significant differences were observed in PE or in-hospital death, although 90-day readmission was more frequent in the triamcinolone group (RR: 1.22 [95% CI: 1.06 to 1.40]). CONCLUSIONS: Although the difference was subtle, periarticular injection of triamcinolone during TKA was associated with an increased risk of early postoperative infection requiring reoperation.

    DOI: 10.1016/j.arth.2025.04.041

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  • Risk of Colorectal Endoscopic Submucosal Dissection in Older Adults: A Nationwide Study in Japan. International journal

    Chikamasa Ichita, Tadahiro Goto, Akiko Sasaki, Kiyohide Fushimi, Sayuri Shimizu

    The American journal of gastroenterology   2025.3

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    OBJECTIVES: To evaluate the risks of colorectal endoscopic submucosal dissection (ESD) in older adult patients, given the increasing number of ESD in an aging population. METHODS: We conducted a retrospective cohort study using the Japanese nationwide database from 2012 to 2023. Patients aged ≥60 who underwent colorectal ESD were included. The primary outcome was overall adverse events (AEs), including in-hospital mortality, procedure-related perforation, abdominal surgery, aspiration pneumonia, and significant post-operative bleeding and thromboembolic events. We first examined the association between age and AEs using multivariable regression adjusting for patient characteristics. Next, to explore the factors associated with overall AEs in those aged ≥85, we fit a multivariable logistic regression. RESULTS: The study included 143,925 cases. Age distribution was as follows: 60-64 (13.5%), 65-74 (44.9%), 75-84 (35.8%), and ≥85 (5.8%). The prevalence of overall AEs increased with age: 5.3% for ages 60-64 years, 7.9% for ages 85-89 and 9.2% for ages ≥90. Patients aged ≥85 had a higher prevalence of overall AEs compared to patients aged 60-64, with an adjusted odds ratio (aOR) of 1.19 (95% confidence interval [CI]: 1.07-1.33, p < 0.01) for those aged 85-89 and an aOR of 1.45 (95% CI: 1.16-1.80, p < 0.01) for those aged ≥90. The majority of AEs in patients aged ≥85 were due to significant post-operative bleeding, with anticoagulant use and body mass index ≥30 identified as key risk factors. CONCLUSIONS: The risks of AEs during colorectal ESD increase with age, particularly in patients aged ≥85 years.

    DOI: 10.14309/ajg.0000000000003447

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  • Ability of pulse oximetry-derived indices to predict hypotension after spinal anesthesia for cesarean delivery: A systematic review and meta-analysis. International journal

    Yuriko Kondo, Eishin Nakamura, Hisashi Noma, Sayuri Shimizu, Takahisa Goto, Takahiro Mihara

    PloS one   20 ( 1 )   e0316715   2025

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    Cesarean deliveries are often performed under spinal anesthesia because of the reduced risk of complications compared with that of general anesthesia. However, hypotension frequently occurs and adversely affects both the mother and fetus. Indices, such as the perfusion index (PI) and pleth variability index (PVI), which are derived from pulse oximetry have been used in numerous studies to predict hypotension after spinal anesthesia. However, their predictive abilities remain controversial. This study aimed to investigate the ability of PI and PVI, measured before the initiation of spinal anesthesia, to predict hypotension after spinal anesthesia in patients undergoing cesarean deliveries. To this end, we conducted a systematic review and meta-analysis. We searched MEDLINE, Embase, Web of Science, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, ClinicalTrials.gov, European Union Clinical Trials Register, World Health Organization International Clinical Trials Registry Platform, and University Hospital Medical Information Network Clinical Trials Registry databases from inception until June 15, 2023. We included retrospective and prospective observational studies and randomized controlled trials that assessed the ability of PI and PVI, measured before the initiation of spinal anesthesia, to predict hypotension after spinal anesthesia during cesarean delivery. We did not restrict our search to specific languages. Of the 19 studies, involving 1437 patients, 17 assessed the PI in 1,311 patients, and 5 assessed the PVI in 344 patients. The summary sensitivity and specificity of the PI were 0.75 (95% confidence interval [CI]: 0.69-0.80) and 0.64 (95%CI: 0.48-0.77), respectively, while those of the PVI were 0.63 (95%CI: 0.47-0.76) and 0.76 (95%CI: 0.64-0.84), respectively. The area under the summary receiver operating characteristic curve was approximately 0.75 for both indexes. Baseline PI and PVI have a moderate predictive ability for hypotension after spinal anesthesia in patients undergoing cesarean delivery.

    DOI: 10.1371/journal.pone.0316715

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  • Response to Zhou et al. International journal

    Chikamasa Ichita, Tadahiro Goto, Kiyohide Fushimi, Sayuri Shimizu

    The American journal of gastroenterology   2024.12

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    DOI: 10.14309/ajg.0000000000003225

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  • Impact of board-certified intensive care training facilities on choice of adjunctive therapies and prognosis of severe respiratory failure: a nationwide cohort study. International journal

    Takuo Yoshida, Sayuri Shimizu, Kiyohide Fushimi, Takahiro Mihara

    Journal of intensive care   12 ( 1 )   52 - 52   2024.12

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    BACKGROUND: Patients with severe respiratory failure have high mortality and need various interventions. However, the impact of intensivists on treatment choices, patient outcomes, and optimal intensivist staffing patterns is unknown. In this study, we aimed to evaluate treatments and clinical outcomes for patients at board-certified intensive care training facilities compared with those at non-certified facilities. METHODS: This retrospective cohort study used Japan's nationwide in-patient database from 2016 to 2019 and included patients with non-operative severe respiratory failure who required mechanical ventilation for over 4 days. Treatments and in-hospital mortality were compared between board-certified intensive care facilities requiring at least one intensivist and non-certified facilities using propensity score matching. RESULTS: Of the 66,905 patients in this study, 30,588 were treated at board-certified facilities, and 36,317 were not. The following differed between board-certified and non-certified facilities: propofol (35% vs. 18%), dexmedetomidine (37% vs. 19%), fentanyl (50% vs. 20%), rocuronium (8.5% vs. 2.6%), vecuronium (1.9% vs. 0.6%), noradrenaline (35% vs. 19%), arginine vasopressin (8.1% vs. 2.0%), adrenaline (2.3% vs. 1.0%), dobutamine (8.7% vs. 4.8%), phosphodiesterase inhibitors (1.0% vs. 0.3%), early enteral nutrition (29% vs. 14%), early rehabilitation (34% vs. 30%), renal replace therapy (15% vs. 6.7%), extracorporeal membrane oxygenation (1.6% vs. 0.3%), critical care unit admission (74% vs. 30%), dopamine (9.0% vs. 15%), sivelestat (4.1% vs. 7.0%), and high-dose methylprednisolone (13% vs. 15%). After 1:1 propensity score matching, the board-certified group had lower in-hospital mortality than the non-certified group (31% vs. 38%; odds ratio, 0.75; 95% confidence interval, 0.72-0.77; P < 0.001). Subgroup analyses showed greater benefits in the board-certified group for older patients, those who required vasopressors on the first day of mechanical ventilation, and those treated in critical care units. CONCLUSIONS: Board-certified intensive care training facilities implemented several different adjunctive treatments for severe respiratory failure compared to non-board-certified facilities, and board-certified facilities were associated with lower in-hospital mortality. Because various factors may contribute to the outcome, the causal relationship remains uncertain. Further research is warranted to determine how best to strengthen patient outcomes in the critical care system through the certification of intensive care training facilities.

    DOI: 10.1186/s40560-024-00766-8

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  • Effects of incentivising dialysis facilities on peripheral arterial disease care in patients undergoing haemodialysis: a claims-based cohort study. International journal

    Yasunori Suzuki, Masao Iwagami, Sayuri Shimizu, Atsushi Goto

    Clinical kidney journal   17 ( 12 )   sfae342   2024.12

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    BACKGROUND: Peripheral arterial disease (PAD) occurs frequently in patients undergoing dialysis, but early intervention for PAD may not be fully implemented. We evaluated the effects of financially incentivising dialysis facilities that provided early detection and management of PAD on outcomes of PAD care. METHODS: This retrospective cohort study identified patients aged 18-74 years who received maintenance haemodialysis between April 2016 and March 2021 from the JMDC Claims Database. The (time-dependent) exposure was claim for incentives for early detection and management of PAD. The outcomes were PAD screening tests (process indicator) and infections, revascularisation procedures, and amputations in the lower extremities (outcome indicators). We used Poisson regression models with generalised estimation equations for the number of screening tests and Cox proportional hazards models for the first incidence of the outcome indicator. RESULTS: Overall, 5850 patients on haemodialysis were identified: 5183 and 667 with and without claims for the incentive, respectively; the numbers of screening tests were 9070 and 776, respectively (adjusted ratio of the frequency, 1.89 [95% confidence interval 1.70-2.10]). Among patients with and without claims for the incentive, infections occurred in 479 and 109 (adjusted hazard ratio [HR], 0.99 [0.80-1.23]), revascularisations were performed in 192 and 29 (adjusted HR, 1.11 [0.75-1.66]), and amputations were conducted in 72 and 9 patients, respectively (adjusted HR, 1.35 [0.66-2.75]). CONCLUSION: The financial incentive for early detection and management of PAD was associated with a higher frequency of PAD screening tests, but not with improved outcome indicators.

    DOI: 10.1093/ckj/sfae342

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  • More than half of Japanese 3‐year‐olds exceeded the World Health Organization screen time guidelines International journal

    Toshifumi Yodoshi, Makoto Kaneko, Sayuri Shimizu, Shinichiro Ueda

    Acta Paediatrica   2024.11

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    DOI: 10.1111/apa.17489

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  • Using a Quality Management System and Risk-based Approach in Observational Studies to Obtain Robust Real-World Evidence International journal

    Reo Tanoshima, Naoko Inagaki, Manabu Nitta, Soichiro Sue, Sayuri Shimizu, Tatsuya Haze, Kotaro Senuki, Chihiro Sano, Hajime Takase, Makoto Kaneko, Akito Nozaki, Kozo Okada, Kohei Ohyama, Atsushi Kawaguchi, Yusuke Kobayashi, Hideki Oi, Shin Maeda, Yuichiro Yano, Yuji Kumagai, Etsuko Miyagi

    Therapeutic Innovation &amp; Regulatory Science   58 ( 6 )   1006 - 1013   2024.9

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    The results of observational studies using real-world data, known as real-world evidence, have gradually started to be used in drug development and decision-making by policymakers. A good quality management system-a comprehensive system of process, data, and documentation to ensure quality-is important in obtaining real-world evidence. A risk-based approach is a common quality management system used in interventional studies. We used a quality management system and risk-based approach in an observational study on a designated intractable disease. Our multidisciplinary team assessed the risks of the real-world data study comprehensively and systematically. When using real-world data and evidence to support regulatory decisions, both the quality of the database and the validity of the outcome are important. We followed the seven steps of the risk-based approach for both database selection and research planning. We scored the risk of two candidate databases and chose the Japanese National Database of designated intractable diseases for this study. We also conducted a quantitative assessment of risks associated with research planning. After prioritizing the risks, we revised the research plan and outcomes to reflect the risk-based approach. We concluded that implementing a risk-based approach is feasible for an observational study using real-world data. Evaluating both database selection and research planning is important. A risk-based approach can be essential to obtain robust real-world evidence.

    DOI: 10.1007/s43441-024-00695-6

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    Other Link: https://link.springer.com/article/10.1007/s43441-024-00695-6/fulltext.html

  • Timing of Direct Oral Anticoagulants Resumption Following Colorectal Endoscopic Submucosal Dissection: A Nationwide Study in Japan. International journal

    Chikamasa Ichita, Tadahiro Goto, Kiyohide Fushimi, Sayuri Shimizu

    The American journal of gastroenterology   2024.8

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    OBJECTIVES: With the increasing use of direct oral anticoagulants (DOACs), managing these agents around endoscopic submucosal dissection (ESD) is crucial. However, due to the need for a large number of cases, studies examining the timing of resumption are lacking, resulting in varied recommendations across international guidelines. We aimed to perform a comparative study about the resumption timing of DOACs after colorectal ESD using a nationwide database in Japan. METHODS: We conducted a retrospective cohort study on colorectal ESD using the Diagnosis Procedure Combination database from 2012 to 2023. Patients using anticoagulants other than DOACs were excluded, and only those who resumed DOACs within 3 days were included. From eligible patients, we divided them into early (the day after ESD) and delayed (2 to 3 days after ESD) resumption groups. We used inverse probability of treatment weighting (IPTW) to assess the delayed bleeding and thromboembolic events within 30 days. Delayed bleeding was defined as bleeding requiring endoscopic hemostasis or blood transfusion after ESD. RESULTS: Of 176,139 colorectal ESDs, 3,550 involved DOAC users, with 2,698 (76%) categorized as early resumption and 852 (24%) categorized as delayed resumption groups. After IPTW adjustment, the early resumption group did not significantly increase delayed bleeding compared to the delayed resumption group (OR, 1.05; 95% CI, 0.78-1.42; P = 0.73). However, it significantly reduced the risk of thromboembolic events (OR, 0.45; 95% CI, 0.25-0.82; P < 0.01). CONCLUSIONS: Resuming DOACs the day after colorectal ESD was associated with reduced thromboembolic events without significant increase in risk of delayed bleeding.

    DOI: 10.14309/ajg.0000000000003050

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  • Changing clinical practice and prognosis for severe respiratory failure over time: A nationwide inpatient database study. International journal

    Takuo Yoshida, Sayuri Shimizu, Kiyohide Fushimi, Takahiro Mihara

    Respiratory investigation   62 ( 5 )   778 - 784   2024.7

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    BACKGROUND: Severe respiratory failure requires numerous interventions and its clinical implementation changes over time. We aimed to clarify the clinical practice and prognosis of severe respiratory failure and its changes over time. METHODS: In a nationwide Japanese administrative database from 2016 to 2019, we identified nonoperative patients with severe respiratory failure without congestive heart failure as the main diagnosis who received mechanical ventilation (MV) for more than four days. We examined trends in patient characteristics, adjunctive interventions, and prognosis. RESULTS: Among 66,905 patients included in this study, patients received antibiotics (90%), high-dose corticosteroids (14%), low-dose corticosteroids (18%), and 51% were admitted to the critical care unit. Hospital mortality was 35%. Median mechanical ventilation lasted 10 days. Tracheostomy occurred in 23% of cases. Median critical care and hospital stays were 10 and 25 days, respectively. Among survivors, 23% had mechanical ventilation dependency at hospital discharge. Large relative changes in adjunctive therapies included fentanyl (30%-38%), rocuronium (4.4%-6.7%), vasopressin (3.8%-6.0%), early rehabilitation (27%-38%), extracorporeal membrane oxygenation (0.7%-1.2%), dopamine (15%-10%), and sivelestat (8.6%-3.5%). No notable changes were seen in mechanical ventilation duration, tracheostomy, critical care unit stay, hospital stay, or ventilator dependency at discharge, except for a slight reduction in hospital mortality (36%-34%). CONCLUSIONS: Several adjunctive therapies for severe respiratory failure changed from 2016 to 2019, with an increase in evidence-based practices and a slight decrease in hospital mortality.

    DOI: 10.1016/j.resinv.2024.07.003

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  • Analysis of in-hospital deaths in patients with critical limb ischemia necessitating invasive treatments: based on a Japanese nationwide database

    Kiwamu Iwata, Manabu Nitta, Makoto Kaneko, Kiyohide Fushimi, Shinichiro Ueda, Sayuri Shimizu

    Cardiovascular Intervention and Therapeutics   2024.4

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    DOI: 10.1007/s12928-024-01003-7

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  • Development and validation of a scoring system for in-hospital mortality following band ligation in esophageal variceal bleeding. International journal

    Chikamasa Ichita, Tadahiro Goto, Yohei Okada, Haruki Uojima, Masao Iwagami, Akiko Sasaki, Sayuri Shimizu

    Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society   2024.3

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    OBJECTIVES: We aimed to develop and validate a simple scoring system to predict in-hospital mortality after endoscopic variceal ligation (EVL) for esophageal variceal bleeding. METHODS: Data from a 13-year study involving 46 Japanese institutions were split into development (initial 7 years) and validation (last 6 years) cohorts. The study subjects were patients hospitalized for esophageal variceal bleeding and treated with EVL. Variable selection was performed using least absolute shrinkage and selection operator regression, targeting in-hospital all-cause mortality as the outcome. We developed the Hospital Outcome Prediction following Endoscopic Variceal Ligation (HOPE-EVL) score from β coefficients of multivariate logistic regression and assessed its discrimination and calibration. RESULTS: The study included 980 patients: 536 in the development cohort and 444 in the validation cohort. In-hospital mortality was 13.6% and 10.1% for the respective cohorts. The scoring system used five variables: systolic blood pressure (<80 mmHg: 2 points), Glasgow Coma Scale (≤12: 1 point), total bilirubin (≥5 mg/dL: 1 point), creatinine (≥1.5 mg/dL: 1 point), and albumin (<2.8 g/dL: 1 point). The risk groups (low: 0-1, middle: 2-3, high: ≥4) in the validation cohort corresponded to observed and predicted mortality probabilities of 2.0% and 2.5%, 19.0% and 22.9%, and 57.6% and 71.9%, respectively. In this cohort, the HOPE-EVL score demonstrated excellent discrimination ability (area under the curve [AUC] 0.890; 95% confidence interval [CI] 0.850-0.930) compared with the Model for End-stage Liver Disease score (AUC 0.853; 95% CI 0.794-0.912) and the Child-Pugh score (AUC 0.798; 95% CI 0.727-0.869). CONCLUSIONS: The HOPE-EVL score practically and effectively predicts in-hospital mortality. This score could facilitate the appropriate allocation of resources and effective communication with patients and their families.

    DOI: 10.1111/den.14773

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  • Effectiveness of antibiotic prophylaxis for acute esophageal variceal bleeding in patients with band ligation: A large observational study International journal

    Chikamasa Ichita, Sayuri Shimizu, Tadahiro Goto, Uojima Haruki, Naoya Itoh, Masao Iwagami, Akiko Sasaki

    World Journal of Gastroenterology   30 ( 3 )   238 - 251   2024.1

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    BACKGROUND

    Esophageal variceal bleeding is a severe complication associated with liver cirrhosis and typically necessitates endoscopic hemostasis. The current standard treatment is endoscopic variceal ligation (EVL), and Western guidelines recommend antibiotic prophylaxis following hemostasis. However, given the improvements in prognosis for variceal bleeding due to advancements in the management of bleeding and treatments of liver cirrhosis and the global concerns regarding the emergence of multidrug-resistant bacteria, there is a need to reassess the use of routine antibiotic prophylaxis after hemostasis.

    AIM

    To evaluate the effectiveness of antibiotic prophylaxis in patients treated for EVL.

    METHODS

    We conducted a 13-year observational study using the Tokushukai medical database across 46 hospitals. Patients were divided into the prophylaxis group (received antibiotics on admission or the next day) and the non-prophylaxis group (did not receive antibiotics within one day of admission). The primary outcome was composed of 6-wk mortality, 4-wk rebleeding, and 4-wk spontaneous bacterial peritonitis (SBP). The secondary outcomes were each individual result and in-hospital mortality. A logistic regression with inverse probability of treatment weighting was used. A subgroup analysis was conducted based on the Child-Pugh classification to determine its influence on the primary outcome measures, while sensitivity analyses for antibiotic type and duration were also performed.

    RESULTS

    Among 980 patients, 790 were included (prophylaxis: 232, non-prophylaxis: 558). Most patients were males under the age of 65 years with a median Child-Pugh score of 8. The composite primary outcomes occurred in 11.2% of patients in the prophylaxis group and 9.5% in the non-prophylaxis group. No significant differences in outcomes were observed between the groups (adjusted odds ratio, 1.11; 95% confidence interval, 0.61-1.99; P = 0.74). Individual outcomes such as 6-wk mortality, 4-wk rebleeding, 4-wk onset of SBP, and in-hospital mortality were not significantly different between the groups. The primary outcome did not differ between the Child-Pugh subgroups. Similar results were observed in the sensitivity analyses.

    CONCLUSION

    No significant benefit to antibiotic prophylaxis for esophageal variceal bleeding treated with EVL was detected in this study. Global reassessment of routine antibiotic prophylaxis is imperative.

    DOI: 10.3748/wjg.v30.i3.238

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  • In-Hospital Mortality in Patients With Cardiogenic Shock Requiring Veno-Arterial Extracorporeal Membrane Oxygenation With Concomitant Use of Impella vs. Intra-Aortic Balloon Pump - A Retrospective Cohort Study Using a Japanese Claims-Based Database.

    Manabu Nitta, Shintaro Nakano, Makoto Kaneko, Kiyohide Fushimi, Kiyoshi Hibi, Sayuri Shimizu

    Circulation journal : official journal of the Japanese Circulation Society   2024.1

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    BACKGROUND: Patients with refractory cardiogenic shock (CS) necessitating peripheral veno-arterial extracorporeal membrane oxygenation (VA-ECMO) often require an intra-aortic balloon pump (IABP) or Impella for unloading; however, comparative effectiveness data are currently lacking.Methods and Results: Using Diagnosis Procedure Combination data from approximately 1,200 Japanese acute care hospitals (April 2018-March 2022), we identified 940 patients aged ≥18 years with CS necessitating peripheral VA-ECMO along with IABP (ECMO-IABP; n=801) or Impella (ECPella; n=139) within 48 h of admission. Propensity score matching (126 pairs) indicated comparable in-hospital mortality between the ECPella and ECMO-IABP groups (50.8% vs. 50.0%, respectively; P=1.000). However, the ECPella cohort was on mechanical ventilator support for longer (median [interquartile range] 11.5 [5.0-20.8] vs. 9.0 [4.0-16.8] days; P=0.008) and had a longer hospital stay (median [interquartile range] 32.5 [12.0-59.0] vs. 23.0 [6.3-43.0] days; P=0.017) than the ECMO-IABP cohort. In addition, medical costs were higher for the ECPella than ECMO-IABP group (median [interquartile range] 9.09 [7.20-12.20] vs. 5.23 [3.41-7.00] million Japanese yen; P<0.001). CONCLUSIONS: Our nationwide study could not demonstrate compelling evidence to support the superior efficacy of Impella over IABP in reducing in-hospital mortality among patients with CS necessitating VA-ECMO. Further investigations are imperative to determine the clinical situations in which the potential effect of Impella can be maximized.

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  • National trends in hospitalizations for gastrointestinal bleeding in Japan

    Ichita Chikamasa, Goto Tadahiro, Sasaki Akiko, Shimizu Sayuri

    Journal of Clinical Biochemistry and Nutrition   advpub   2024

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    Gastrointestinal bleeding (GIB) is a significant public health concern, predominantly associated with high morbidity. However, there have been no reports investigating the trends of GIB in Japan using nationwide data. This study aims to identify current trends and issues in the management of GIB by assessing Japan’s national data. We analyzed National Database sampling data from 2012 to 2019, evaluating annual hospitalization rates for major six types of GIB including hemorrhagic gastric ulcers, duodenal ulcers, esophageal variceal bleeding, colonic diverticular bleeding, ischemic colitis, and rectal ulcers. In this study, hospitalization rates per 100,000 indicated a marked decline in hemorrhagic gastric ulcers, approximately two-thirds from 41.5 to 27.9, whereas rates for colonic diverticular bleeding more than doubled, escalating from 15.1 to 34.0. Ischemic colitis rates increased 1.6 times, from 20.8 to 34.9. In 2017, the hospitalization rate per 100,000 for colonic diverticular bleeding and ischemic colitis surpassed those for hemorrhagic gastric ulcers (31.1, 31.3, and 31.0, respectively). No significant changes were observed for duodenal ulcers, esophageal variceal bleeding, or rectal ulcers. The findings of this study underscore a pivotal shift in hospitalization frequencies from upper GIB to lower GIB in 2017, indicating a potential shift in clinical focus and resource allocation.

    DOI: 10.3164/jcbn.23-111

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  • Considerations for evaluating antibiotic prophylaxis in cirrhotic patients with upper gastrointestinal bleeding in real-world data.

    Chikamasa Ichita, Tadahiro Goto, Sayuri Shimizu

    Journal of gastroenterology   59 ( 2 )   160 - 161   2023.12

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  • In-Hospital Death and End-of-Life Status Among Patients With Adult Congenital Heart Disease - A Retrospective Study Using the JROAD-DPC Database in Japan.

    Naomi Akiyama, Ryota Ochiai, Manabu Nitta, Sayuri Shimizu, Makoto Kaneko, Ayako Kuraoka, Michikazu Nakai, Yoko Sumita, Tomoko Ishizu

    Circulation journal : official journal of the Japanese Circulation Society   2023.12

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    BACKGROUND: The end-of-life (EOL) status, including age at death and treatment details, of patients with adult congenital heart disease (ACHD) remains unclear. This study investigated the EOL status of patients with ACHD using a nationwide Japanese database.Methods and Results: Data on the last hospitalization of 26,438 patients with ACHD aged ≥15 years, admitted between 2013 and 2017, were included. Disease complexity (simple, moderate, or great) was classified using International Classification of Diseases, 10th Revision codes. Of the 853 deaths, 831 patients with classifiable disease complexity were evaluated for EOL status. The median age at death of patients in the simple, moderate, and great disease complexity groups was 77.0, 66.5, and 39.0 years , respectively. The treatments administered before death to patients in the simple, moderate, and great complexity groups included cardiopulmonary resuscitation (30.1%, 35.7%, and 41.9%, respectively), percutaneous cardiopulmonary support (7.2%, 16.5%, and 16.3%, respectively), and mechanical ventilation (58.7%, 72.2%, and 75.6%, respectively). Overall, 70% of patients died outside of specialized facilities, with >25% dying after ≥31 days of hospitalization. CONCLUSIONS: Nationwide data showed that patients with ACHD with greater disease complexity died at a younger age and underwent more invasive treatments before death, with many dying after ≥1 month of hospitalization. Discussing EOL options with patients at the appropriate time is important, particularly for patients with greater disease complexity.

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  • Inappropriate shock incidence in patients with subcutaneous implantable cardioverter-defibrillators with concomitant cardiac implantable electronic devices: A single-center cohort study. International journal

    Makiko Okazaki, Yuki Sahashi, Takahiko Nagase, Kanki Inoue, Yukio Sekiguchi, Junichi Nitta, Satoru Shinoda, Sayuri Shimizu, Makoto Kuroki, Mitsuaki Isobe, Takahiro Mihara

    Pacing and clinical electrophysiology : PACE   47 ( 1 )   131 - 138   2023.11

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    BACKGROUND: Subcutaneous implantable cardioverter defibrillators (S-ICDs) are occasionally used in combination with other cardiac implantable electronic devices (CIEDs). However, whether the incidence of inappropriate shock increases in patients with S-ICDs and concomitant CIEDs remains unclear. This study aimed to investigate the association between the concomitant use of CIEDs and the incidence of inappropriate shock in patients with current-generation S-ICDs. METHODS: A total of 127 consecutive patients received an S-ICD. Patients were assigned to two groups depending on concomitant use of CIEDs at the time of S-ICD implantation: patients without other CIEDs (non-combined group, 106 patients) and patients with other CIEDs (combined group, 21 patients). CIEDs included pacemakers, implantable cardioverter defibrillators, cardiac resynchronization therapy pacemakers, and cardiac resynchronization therapy defibrillators. The primary outcome was inappropriate shock, defined as a shock other than ventricular arrhythmia. Hazard ratios and 95% confidence intervals were calculated using a time-varying Cox proportional hazards model which was adjusted for age because age differed between the groups and could be a confounder. RESULTS: During a median follow-up period of 2.2 years (interquartile range, 1.0-3.4 years), inappropriate shock events occurred in 17 (16%) and five (19%) patients of the non-combined and combined groups, respectively. While the age-adjusted hazard ratio for inappropriate shock was 24% higher in the combined than in the non-combined group (hazard ratio = 1.24, 95% confidence interval, 0.39-3.97), this difference was insignificant (p = .71). CONCLUSION: The incidence of inappropriate shock did not differ between patients with and without concomitant use of CIEDs, suggesting that S-ICDs could potentially be combined with other CIEDs without increasing the number of inappropriate shocks. Further studies are warranted to confirm the safety and feasibility of concomitant use of S-ICDs and CIEDs.

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  • 各種データベースを用いた内視鏡関連研究の利点と問題点 徳洲会メディカルデータベースを用いた内視鏡関連研究の可能性 DPCデータベースとの比較

    市田 親正, 清水 沙友里, 佐々木 亜希子

    Gastroenterological Endoscopy   65 ( Suppl.2 )   1940 - 1940   2023.10

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  • Predictive ability of pulse oximetry-derived indices for hypotension after spinal anaesthesia for caesarean section: protocol for a systematic review and meta-analysis. International journal

    Yuriko Kondo, Takahiro Mihara, Eishin Nakamura, Hisashi Noma, Sayuri Shimizu, Takahisa Goto

    BMJ open   13 ( 6 )   e069309   2023.6

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    INTRODUCTION: In general, caesarean sections are performed under spinal anaesthesia. Hypotension after spinal anaesthesia adversely affects both the mother and fetus. Although several studies have used pulse oximetry-derived indices, such as pulse perfusion index (PI) and Pleth variability index (PVI), to predict hypotension after spinal anaesthesia, the predictive ability of the PI and PVI remain controversial. METHODS AND ANALYSIS: We prepared this protocol following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols guidelines. We will conduct searches of MEDLINE, Embase, Web of Science, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, Clinicaltrial.gov, European Union Clinical Trials Register (EU-CTR), WHO International Clinical Trials Registry Platform (ICTRP) and University Hospital Medical Information Network Clinical Trials Registry (UMIN) from inception until 8 October 2022. We will include retrospective and prospective observational studies and randomised controlled trials that evaluated the predictive ability of PI and PVI for hypotension after spinal anaesthesia for caesarean section, published in any language. We will exclude case reports, case series and animal studies. Two authors will independently scan and select eligible studies and perform data extraction and assessment of risk of bias. We will estimate predictive ability of PI and PVI as indices of hypotension after spinal anaesthesia for caesarean section using the Reitsma-type bivariate random-effects synthesis model and the hierarchical summary receiver operating characteristic curve. We will assess the quality of evidence using the Grading of Recommendation Assessment, Development and Evaluation approach. ETHICS AND DISSEMINATION: Ethics approval is not required as the systematic review will use existing published data. The results will be submitted for publication in a peer-reviewed journal. PROSPERO REGISTRATION NUMBER: CRD42022362596.

    DOI: 10.1136/bmjopen-2022-069309

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  • Clinical features of acute esophageal mucosal lesions and reflux esophagitis Los Angeles classification grade D: A retrospective study. International journal

    Chikamasa Ichita, Akiko Sasaki, Sayuri Shimizu

    World journal of gastrointestinal surgery   15 ( 3 )   408 - 419   2023.3

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    BACKGROUND: Acute esophageal mucosal lesions (AEMLs) are an underrecognized and largely unexplored disease. Endoscopic findings are similar, and a higher percentage of AEML could be misdiagnosed as reflux esophagitis Los Angeles classification grade D (RE-D). These diseases could have different pathologies and require different treatments. AIM: To compare AEML and RE-D to confirm that the two diseases are different from each other and to clarify the clinical features of AEML. METHODS: We selected emergency endoscopic cases of upper gastrointestinal bleeding with circumferential esophageal mucosal injury and classified them into AEML and RE-D groups according to the mucosal injury's shape on the oral side. We examined patient background, blood sampling data, comorbidities at onset, endoscopic characteristics, and outcomes in each group. RESULTS: Among the emergency cases, the AEML and RE-D groups had 105 (3.1%) and 48 (1.4%) cases, respectively. Multiple variables exhibited significantly different results, indicating that these two diseases are distinct. The clinical features of AEML consisted of more comorbidities [risk ratio (RR): 3.10; 95% confidence interval (CI): 1.68-5.71; P < 0.001] and less endoscopic hemostasis compared with RE-D (RR: 0.25; 95%CI: 0.10-0.63; P < 0.001). Mortality during hospitalization was higher in the AEML group (RR: 3.43; 95%CI: 0.82-14.40; P = 0.094), and stenosis developed only in the AEML group. CONCLUSION: AEML and RE-D were clearly distinct diseases with different clinical features. AEML may be more common than assumed, and the potential for its presence should be taken into account in cases of upper gastrointestinal bleeding with comorbidities.

    DOI: 10.4240/wjgs.v15.i3.408

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  • Effectiveness of early colonoscopy in patients with colonic diverticular hemorrhage: A single-center retrospective cohort study. International journal

    Chikamasa Ichita, Sayuri Shimizu, Akiko Sasaki, Chihiro Sumida, Takashi Nishino, Karen Kimura

    World journal of gastrointestinal endoscopy   14 ( 12 )   759 - 768   2022.12

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    BACKGROUND: Current guidelines recommend colonoscopy within 24 h for acute lower gastrointestinal bleeding; however, the evidence in support for colonic diverticular hemorrhage (CDH) indications remains insufficient. AIM: To investigate the effectiveness of early colonoscopy on the length of hospital stay for CDH patients. METHODS: We conducted a single-center retrospective cohort study. Patients who underwent colonoscopy within 24 h of presentation (early group) were compared with those who underwent colonoscopy beyond 24 h of presentation (elective group). The primary outcome was the length of hospital stay, and secondary outcomes were the identification of stigmata of recent hemorrhage (SRH), rebleeding, red blood cell transfusion more than 4 units, and interventional radiology and abdominal surgery after colonoscopy. RESULTS: We identified 574 CDH cases. Patients were divided into the early (n = 328) and elective (n = 226) groups. After propensity score matching, 191 pairs were generated. The length of hospital stay did not significantly differ between the two groups (early group vs elective group; median, 7 vs 8 d; P = 0.10). The early group had a significantly high identification of SRH (risk difference, 11.6%; 95%CI: 2.7 to 20.3; P = 0.02). No significant differences were found in the rebleeding (risk difference, 4.7%; 95%CI: -4.1 to 13.5; P = 0.35), red blood cell transfusion more than 4 units (risk difference, 1.6%; 95%CI: -7.5 to 10.6; P = 0.82), and interventional radiology and abdominal surgery rate after colonoscopy (risk difference, 0.5%; 95%CI: -2.2 to 3.2; P = 1.00). CONCLUSION: Early colonoscopy within 24 h, on arrival for CDH, could not improve the length of hospital stay.

    DOI: 10.4253/wjge.v14.i12.759

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  • Impact of COVID-19 infection rates on admissions for ambulatory care sensitive conditions: nationwide difference-in-difference design in Japan. International journal

    Makoto Kaneko, Sayuri Shimizu, Ai Oishi, Kiyohide Fushimi

    Family medicine and community health   10 ( 4 )   2022.10

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    OBJECTIVES: SARS-CoV-2 infection (COVID-19) has affected tertiary medical institutions and primary care. Admission for ambulatory care sensitive conditions (ACSCs) is an important indicator of primary care quality. However, no nationwide study, especially in Asia, has examined the association between admissions for ACSCs and local surges in COVID-19. This study aimed to examine how the number of admissions for ACSCs has changed in Japan between the areas with higher and lower rates of COVID-19 infection. DESIGN: This was a retrospective two-stage cross-sectional study. We employed a difference-in-difference design to compare the number of hospital admissions for ACSCs between the areas with higher and lower rates of COVID-19 infection in Japan. SETTING: The study used a nationwide database in Japan. PARTICIPANTS: All patients were aged 20 years and above and were admitted due to ACSCs during the study period between March and September 2019 (before the pandemic) and between March and September 2020 (during the pandemic). RESULTS: The total number of ACSC admissions was 464 560 (276 530 in 2019 and 188 030 in 2020). The change in the number of admissions for ACSCs per 100 000 was not statistically significant between the areas with higher and lower rates of COVID-19 infection: 7.50 (95% CI -87.02 to 102.01). In addition, in acute, chronic and preventable ACSCs, the number of admissions per 100 000 individuals did not change significantly. CONCLUSION: Although admissions for ACSCs decreased during the COVID-19 pandemic, there was no significant change between the areas with higher and lower rates of COVID-19 infection. This implies that the COVID-19 pandemic affected the areas with higher infection rates and the areas with lower rates.

    DOI: 10.1136/fmch-2022-001736

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  • Association between psoriasis and short-term outcomes of acute myocardial infarction: A matched-pair cohort study using a nationwide inpatient database in Japan. International journal

    Hideaki Miyachi, Takaaki Konishi, Daisuke Shigemi, Hiroki Matsui, Sayuri Shimizu, Kiyohide Fushimi, Hiroyuki Matsue, Hideo Yasunaga

    JAAD international   8   21 - 30   2022.9

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    Background: Psoriasis is a known risk factor for acute myocardial infarction (AMI). However, the associations between psoriasis and short-term outcomes of AMI remain controversial. Objective: To compare the short-term outcomes of AMI patients with and without psoriasis accounting for patient background characteristics and site-specific effects. Methods: We identified patients with AMI between July 2010 and March 2020, using a Japanese national inpatient database. We matched patients with and without psoriasis to generate a 1:10 matched-pair cohort matched for sex, hospital, and fiscal year at admission. Multivariable regression analyses with adjustment for background characteristics including age and Killip class at admission were conducted to compare short-term outcomes of AMI. Results: In this study of AMI patients with psoriasis (n = 455) and without psoriasis (n = 438,534), 30-day in-hospital mortality was 5.6%. Patients with psoriasis had higher proportions of comorbidities than patients without psoriasis. Multivariable regression analyses in the matched-pair cohort revealed that psoriasis was significantly associated with decreased 30-day in-hospital mortality (odds ratio [OR], 0.26; 95% confidence interval [CI], 0.08-0.85). Limitations: Retrospective study design without data on psoriasis severity. Conclusion: The matched-pair cohort analyses with adjustment for patient background characteristics and site-specific effects revealed decreased in-hospital mortality in AMI patients with psoriasis.

    DOI: 10.1016/j.jdin.2022.04.007

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  • Fragmentation of ambulatory care among older adults: an exhaustive database study in an ageing city in Japan International journal

    Makoto Kaneko, Satoru Shinoda, Sayuri Shimizu, Makoto Kuroki, Sachiko Nakagami, Taiga Chiba, Atsushi Goto

    BMJ Open   12 ( 8 )   e061921 - e061921   2022.8

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    Objectives

    Continuity of care is a core dimension of primary care, and better continuity is associated with better patient outcomes. Therefore, care fragmentation can be an indicator to assess the quality of primary care, especially in countries without formal gatekeeping system, such as Japan. Thus, this study aimed to describe care fragmentation among older adults in an ageing city in Japan.

    Design

    Cross-sectional study.

    Setting

    The most populated basic municipality in Japan.

    Participants

    Older adults aged 75 years and older.

    Interventions

    This study used a health claims database, including older adults who visited medical facilities at least four times a year in an urban city in Japan. The Fragmentation of Care Index (FCI) was used as an indicator of fragmentation. The FCI was developed from the Continuity of Care Index and is based on the total number of visits, different institutions visited and proportion of visits to each institution. We employed Tobit regression analysis to examine the association between the FCI and age, sex, type of insurance and most frequently visited facility.

    Results

    The total number of participants was 413 600. The median age of the study population was 81 years, and 41.6% were men. The study population visited an average of 3.42 clinics/hospitals, and the maximum number of visited institutions was 20. The proportion of patients with FCI &gt;0 was 85.0%, with a mean of 0.583. Multivariable analysis showed that patients receiving public assistance had a lower FCI compared with patients not receiving public assistance, with a coefficient of 0.137.

    Conclusions

    To our knowledge, this is the first study to demonstrate care fragmentation in Japan. Over 80% of the participants visited two or more medical facilities, and their mean FCI was 0.583. The FCI could be a basic indicator for assessing the quality of primary care.

    DOI: 10.1136/bmjopen-2022-061921

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  • Ecology of medical care for 90+ individuals: An exhaustive <scp>cross‐sectional</scp> survey in an ageing city

    Makoto Kaneko, Sayuri Shimizu, Makoto Kuroki, Sachiko Nakagami, Taiga Chiba, Atsushi Goto

    Geriatrics &amp; Gerontology International   22 ( 6 )   483 - 489   2022.4

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    AIM: Urbanization and ageing are worldwide issues for healthcare providers. In particular, older adults aged 90 years and older have increased cognitive impairment and lower daily functioning than younger adults. However, the healthcare use of the oldest old remains unclear. This study aimed to describe the healthcare use of the oldest old compared with younger older adults in a city using the ecology of medical care model. METHODS: We conducted a cross-sectional study. This study targeted all residents aged 75 years and older registered in a city in Japan for one year. We described healthcare use per 1000 inhabitants over a 1-month period and included: outpatient visits, emergency department visits, hospitalizations, home visits, home care services, and facility services. We also compared healthcare use among older adults aged 75-89 years and 90 years and older. RESULTS: We described the healthcare use of 454 366 (male/female: 186 177/268 189) older adults. The numbers of persons per 1000 residents who used healthcare resources at least once in 1 month (75-89 years/90 years and older) were: outpatient clinic visits, 622/570; hospital outpatient visits, 300/263; advanced treatment hospital outpatient visits, 16/6; emergency department visits, 10/27; hospitalizations, 45/96; advanced treatment hospital hospitalizations, 2/1; planned home visits, 36/228; urgent home visits, 6/38; home care services, 173/533; and facility services, 32/178. CONCLUSIONS: The results revealed that older adults over 90 years had more hospitalizations, emergency department visits and home visits, and used facility/home care services more compared with older adults aged 75-89 years. The results provide a useful benchmark for healthcare use estimation. Geriatr Gerontol Int 2022; 22: 483-489.

    DOI: 10.1111/ggi.14387

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  • Impaired Left Atrial Function in Patients with Atrial Septal Defect and History of Atrial Fibrillation.

    Manabu Nitta, Makoto Kaneko, Sayuri Shimizu, Hideaki Kanazawa, Yuji Itabashi, Kotaro Miura, Mike Saji, Itaru Takamisawa, Morimasa Takayama, Shintaro Nakano, Saki Hasegawa-Tamba, Shinichiro Ueda

    International heart journal   63 ( 5 )   864 - 873   2022

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    In patients with atrial septal defect (ASD), atrial left-to-right shunting causes left atrial (LA) remodeling and dysfunction, leading to atrial fibrillation (AF). In adults with ASD and concomitant AF, LA function should be evaluated after ASD closure plus AF radiofrequency catheter ablation (RFCA).This multicenter retrospective cohort study included patients who underwent transcatheter ASD closure at one of the four leading hospitals. Patients with a history of AF also underwent preceding RFCA. The association between AF history and LA ejection fraction (EF) (indicating LA global function) at 6-12 months following ASD closure was evaluated. To account for differences in baseline characteristics between patients with and without a history of AF, we conducted the following statistical methods: (1) multivariate regression analysis in the prepropensity score (PS)-matched cohort and (2) univariate comparisons in the PS-matched cohort.Overall, this study included 231 patients (30 with AF history, 201 without). Multiple regression analysis showed that AF history was independently associated with impaired LAEF (β = -10.425, P < 0.001, model created prior to propensity matching). A one-to-one PS matching (25 pairs) showed that the LAEF at 6-12 months following ASD closure was significantly impaired in patients with ASD and AF history compared to that in patients without history of AF (median LAEF, 37.5% (interquartile range [IQR] 29.4%-48.5%) versus 52.3 [IQR 50.0%-56.6%]; P < 0.001).LA function was impaired in patients with ASD and a history of AF at 6-12 months after successful transcatheter ASD closure and on maintenance of sinus rhythm by RFCA.

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  • Outcomes of women with congenital heart disease admitted to acute-care hospitals for delivery in Japan: a retrospective cohort study using nationwide Japanese diagnosis procedure combination database International journal

    Manabu Nitta, Sayuri Shimizu, Makoto Kaneko, Kiyohide Fushimi, Shinichiro Ueda

    BMC Cardiovascular Disorders   21 ( 1 )   409 - 409   2021.12

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    <title>Abstract</title><sec>
    <title>Background</title>
    The number of women with congenital heart disease (CHD) who are of childbearing age is increasing due to advancements in medical management. Nonetheless, data on the outcomes of delivery in women with CHD remain limited. Therefore, we conducted a retrospective cohort study using a nationwide database of deliveries by women with CHD.


    </sec><sec>
    <title>Methods</title>
    Deliveries by women with CHD discharged from acute-care hospitals between April 2017 and March 2018 were identified based on the Diagnosis Procedure Combination database which covers almost all acute-care hospitals in Japan. By using this database, we tried to include relatively high-risk deliveries by women with CHD. Subjects were divided into three groups according to the underlying disease complexity: simple, moderate, and great complexity. The clinical characteristics and incidence of peripartum cardiovascular events were compared among the three groups.


    </sec><sec>
    <title>Results</title>
    A total of 249 deliveries from 107 hospitals were included. The largest facility had 29 deliveries per year. Given the uncertainty of underlying cardiac anomalies, 48 women were excluded, and the remaining 201 women (median age, 32 years) were analyzed. In-hospital maternal death, use of extracorporeal membrane oxygenation, intra-aortic balloon pump, pacemaker, and direct current cardioversion were not observed. Nine patients (4.5%) required intravenous diuretic administration. However, the difference in the frequency of diuretic use was not significant among the three groups (simple, 1.9%; moderate, 7.2%; great, 6.9%; <italic>P</italic> = 0.204). One participant required valve replacement surgery at 22 days after a successful cesarean section. As the disease complexity increased, deliveries occurred more frequently at university hospitals (simple, 41.7%; moderate, 52.2%; great, 72.4%; <italic>P</italic> = 0.013) and the length of hospitalization was significantly longer, with median durations of 9.0 (interquartile range [IQR] 7.0–11.0) days, 10.0 (IQR 8.0–24.0) days, and 11.0 (IQR 8.0–36.0) days in the simple, moderate, and great complexity groups, respectively (<italic>P</italic> = 0.002).


    </sec><sec>
    <title>Conclusions</title>
    Appropriate patient selection and management by specialized tertiary institutions may contribute to positive outcomes in pregnancies in women with CHD.


    </sec>

    DOI: 10.1186/s12872-021-02222-z

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  • Rocuronium reversed with sugammadex for thymectomy in myasthenia gravis: A retrospective analysis of complications from Japan. International journal

    Sayomi Tsukada, Sayuri Shimizu, Kiyohide Fushimi

    European journal of anaesthesiology   38 ( 8 )   850 - 855   2021.8

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    BACKGROUND: Postoperative respiratory failure is a serious problem in the anaesthetic management of patients with myasthenia gravis who undergo thymectomy. Although the classical recommendation is to avoid neuromuscular blockers, there is no strong evidence to support it. OBJECTIVES: To evaluate the postoperative outcomes in patients with myasthenia gravis after thymectomy when anaesthetic management included rocuronium reversed with sugammadex. DESIGN: A retrospective cohort study. SETTING: Nationwide acute in-patient care database. PATIENTS: A total of 1143 patients with myasthenia gravis who underwent thymectomy were included. Data were collected from the medical insurance claims data of acute care in-patient hospitals. MAIN OUTCOME MEASURES: The postoperative complications when rocuronium reversed with sugammadex was compared against no muscle relaxant use using propensity score matching. The primary outcomes were the rates of in-hospital mortality, plasma exchange following thymectomy and the use of immunoglobulins. The secondary outcomes were the length of stay in the high dependency/ICUs, the total length of hospital stay and the duration and type of respiratory support following thymectomy. RESULTS: There were no significant differences between the propensity score matched groups in terms of plasma exchange [relative risk, 0.96; 95% confidence interval (CI), 0.64 to 1.43] and use of immunoglobulins (relative risk, 1.09; 95% CI, 0.60 to 1.97). The length of hospital stay was significantly shorter in patients in whom rocuronium and sugammadex were used: 29.0 vs. 35.4 days, P = 0.035. CONCLUSIONS: Anaesthetic management with rocuronium reversed by sugammadex was not associated with increased risk of respiratory complications. These findings could help in the anaesthetic management of patients with myasthenia gravis.

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  • Treatments and outcomes of generalized pustular psoriasis: a cohort of 1516 patients in a nationwide inpatient database in Japan. International journal

    Hideaki Miyachi, Takaaki Konishi, Ryosuke Kumazawa, Hiroki Matsui, Sayuri Shimizu, Kiyohide Fushimi, Hiroyuki Matsue, Hideo Yasunaga

    Journal of the American Academy of Dermatology   86 ( 6 )   1266 - 1274   2021.6

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    BACKGROUND: Because generalized pustular psoriasis (GPP) is uncommon, there are few studies reporting treatments and outcomes for large numbers of patients. OBJECTIVE: To report treatments and outcomes in a large cohort of hospitalized patients with GPP. METHODS: Using a Japanese national inpatient database, we identified 1516 patients with GPP who required hospitalization from July 2010 to March 2019. We categorized patients into three medication groups: biologics (n = 294), oral agents without biologics (n = 948), or systemic corticosteroids only (n = 274). We investigated their characteristics, treatments, and outcomes. RESULTS: Mean age was 66 years (interquartile range: 52-77 years); 50 patients (3.3%) were admitted to the intensive care unit, 125 (8.2%) required blood pressure support, and 63 (4.2%) died. Patients receiving biologics were younger and had fewer comorbidities and lower in-hospital mortality (1.0% [biologics group] vs. 3.7% [oral-agents group] vs. 9.1% [corticosteroids-only group], p < .001) and morbidity (5.4% vs. 8.2% vs. 12%, p = .02). Among those who received biologics, IL-17 inhibitor use increased over time and showed comparable in-hospital mortality and morbidity to that of TNF inhibitors. LIMITATIONS: Retrospective study design. Some patients received multiple medications. CONCLUSION: Biologic treatments showed favorable outcomes compared with other treatments.

    DOI: 10.1016/j.jaad.2021.06.008

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  • Authors' Response to Letter to the Editor. International journal

    Seigo Mitsutake, Tatsuro Ishizaki, Rumiko Tsuchiya-Ito, Kazuaki Uda, Chie Teramoto, Sayuri Shimizu, Hideki Ito

    Archives of physical medicine and rehabilitation   102 ( 1 )   163 - 164   2021.1

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  • 「高齢者の安全な薬物療法ガイドライン2015」発表前後の糖尿病治療薬の処方傾向 NDBオープンデータの活用

    浜田 将太, 岩上 将夫, 佐方 信夫, 杉山 雄大, 石川 智基, 清水 沙友里, 田宮 菜奈子

    Journal of Epidemiology   31 ( Suppl. )   133 - 133   2021.1

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  • Optimal use of biologics with endoscopic balloon dilatation for repeated intestinal strictures in Crohn's disease. Reviewed International journal

    Akihito Uda, Hiroyo Kuwabara, Sayuri Shimizu, Ryuichi Iwakiri, Kiyohide Fushimi

    JGH open : an open access journal of gastroenterology and hepatology   4 ( 3 )   532 - 540   2020.6

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    DOI: 10.1002/jgh3.12329

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  • Associations of Hospital Discharge Services With Potentially Avoidable Readmissions Within 30 Days Among Older Adults After Rehabilitation in Acute Care Hospitals in Tokyo, Japan. Reviewed International journal

    Seigo Mitsutake, Tatsuro Ishizaki, Rumiko Tsuchiya-Ito, Kazuaki Uda, Chie Teramoto, Sayuri Shimizu, Hideki Ito

    Archives of physical medicine and rehabilitation   101 ( 5 )   832 - 840   2020.5

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    OBJECTIVE: To examine the associations of 3 major hospital discharge services covered under health insurance (discharge planning, rehabilitation discharge instruction, and coordination with community care) with potentially avoidable readmissions (PARs) within 30 days in older adults after rehabilitation in acute care hospitals in Tokyo, Japan. DESIGN: Retrospective cohort study using a large-scale medical claims database of all Tokyo residents aged ≥75 years. SETTING: Acute care hospitals. PARTICIPANTS: Patients who underwent rehabilitation and were discharged to home (N=31,247; mean age in years ± SD, 84.1±5.7) between October 2013 and July 2014. INTERVENTIONS: None. MAIN OUTCOME MEASURE: 30-day PAR. RESULTS: Among the patients, 883 (2.9%) experienced 30-day PAR. A multivariable logistic generalized estimating equation model (with a logit link function and binominal sampling distribution) that adjusted for patient characteristics and clustering within hospitals showed that the discharge services were not significantly associated with 30-day PAR. The odds ratios were 0.962 (95% confidence interval [CI], 0.805-1.151) for discharge planning, 1.060 (95% CI, 0.916-1.227) for rehabilitation discharge instruction, and 1.118 (95% CI, 0.817-1.529) for coordination with community care. In contrast, the odds of 30-day PAR among patients with home medical care services were 1.431 times higher than those of patients without these services (P<.001), and the odds of 30-day PAR among patients with a higher number (median or higher) of rehabilitation units were 2.031 times higher than those of patients with a lower number (below median) (P<.001). Also, the odds of 30-day PAR among patients with a higher Hospital Frailty Risk Score (median or higher) were 1.252 times higher than those of patients with a lower score (below median) (P=.001). CONCLUSIONS: The insurance-covered discharge services were not associated with 30-day PAR, and the development of comprehensive transitional care programs through the integration of existing discharge services may help to reduce such readmissions.

    DOI: 10.1016/j.apmr.2019.11.019

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  • Drug prescription patterns and factors associated with polypharmacy in >1 million older adults in Tokyo. Reviewed

    Tatsuro Ishizaki, Seigo Mitsutake, Shota Hamada, Chie Teramoto, Sayuri Shimizu, Masahiro Akishita, Hideki Ito

    Geriatrics & gerontology international   20 ( 4 )   304 - 311   2020.4

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    AIM: To determine the patterns of concomitant drug use for chronic diseases and examine the risk factors of polypharmacy in older outpatients. METHODS: Data were extracted from an anonymized health insurance claims database of a public insurance program for older adults in Tokyo, Japan. We analyzed individuals aged ≥75 years who had visited an outpatient clinic, and were regularly prescribed orally administered drugs for chronic diseases for ≥14 days between May and August 2014. The prescription patterns for 16 main drug types were studied using exploratory factor analysis, and the risk factors of polypharmacy, defined as the concomitant prescription of five or more drugs, were identified using multivariate logistic regression models. RESULTS: A total of 1 094 199 outpatients were analyzed (mean age 81.8 years, 38.4% men). We identified five prescription patterns that explained almost 40% of all observed variance: edema/heart failure/atrial fibrillation-related drugs, insomnia/anxiety-related drugs, pain-related drugs, lifestyle disease-related drugs and dementia-related drugs. The significant risk factors of polypharmacy included men, octogenarians and nonagenarians, higher number of medical institutions visited, use of physician home visits, and hospitalization during the study period. The main drug types most strongly associated with polypharmacy were analgesics, diuretics and antidiabetics. CONCLUSIONS: Polypharmacy was found to be prevalent in older outpatients aged ≥75 years in Tokyo. These findings might provide useful evidence that can contribute to the development of practical countermeasures against adverse events associated with polypharmacy in clinical practice. Geriatr Gerontol Int 2020; 20: 304-311.

    DOI: 10.1111/ggi.13880

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  • Association of pharmacological treatments for hypertension, diabetes, and dyslipidemia with health checkup participation and identification of disease control factors among older adults in Tokyo, Japan. Reviewed International journal

    Seigo Mitsutake, Tatsuro Ishizaki, Rumiko Tsuchiya-Ito, Chie Teramoto, Sayuri Shimizu, Takuya Yamaoka, Akihiko Kitamura, Hideki Ito

    Preventive medicine reports   17   101033 - 101033   2020.3

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    The Japanese government encourages older adults to participate in annual health checkups designed to detect lifestyle diseases such as hypertension, diabetes, and dyslipidemia. However, individuals who are already being treated for these diseases are unlikely to benefit from health checkup participation. This retrospective cohort study of older adults evaluated the associations of pharmacological treatments for these diseases with health checkup participation and identified the disease control factors among patients receiving treatments. Using medical claims data and health checkup data between September 2013 and August 2014 from 820,215 older adults aged ≥ 75 years residing in Tokyo, Japan, we examined the associations between pharmacological treatments and health checkup participation using binary logistic regression analysis. Next, patients receiving pharmacological treatments were categorized into intensive, moderate, or limited disease control based on their blood pressure, hemoglobin A1c levels, and lipid levels; multinomial logistic regression analyses were used to identify the disease control factors. The results showed that patients receiving pharmacological treatments were more likely (odds ratio: 1.374; P < 0.001) to participate in health checkups than patients not receiving treatments. Patients with intensive disease control were more likely to be aged ≥ 90 years and use home medical care than patients with moderate control. Our findings suggest that it may be beneficial to shift the focus of health checkups from simply identifying at-risk patients to also supporting disease management. Information obtained from databases that link medical claims and health checkup data may improve evaluations of disease control in older adults and help to streamline healthcare systems.

    DOI: 10.1016/j.pmedr.2019.101033

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  • Impact of a national medical fee schedule revision on the cessation of physician home visits among older patients in Tokyo: A retrospective study. Reviewed International journal

    Chie Teramoto, Tatsuro Ishizaki, Seigo Mitsutake, Haruhisa Fukuda, Takashi Naruse, Sayuri Shimizu, Hideki Ito

    Health & social care in the community   27 ( 4 )   899 - 906   2019.7

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    DOI: 10.1111/hsc.12707

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  • A comparative analysis of treatment costs for home-based care and hospital-based care in enteral nutrition patients: A retrospective analysis of claims data

    M. Maeda, H. Fukuda, S. Shimizu, T. Ishizaki

    Health Policy   123 ( 4 )   367 - 372   2019.4

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    DOI: 10.1016/j.healthpol.2018.12.006

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  • Patterns of Co-Occurrence of Chronic Disease Among Older Adults in Tokyo, Japan. Reviewed International journal

    Seigo Mitsutake, Tatsuro Ishizaki, Chie Teramoto, Sayuri Shimizu, Hideki Ito

    Preventing chronic disease   16   E11   2019.1

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    INTRODUCTION: Multimorbidity, the co-occurrence of 2 or more disorders in a patient, can complicate treatment planning and affect health outcomes. Improvements in prevention and management strategies for patients with 3 or more or more co-occurring chronic diseases requires an understanding of the epidemiology of common 3-way disease patterns and their interactions. Our study aimed to describe these common 3-way disease patterns and examine the factors associated with the co-occurrence of 3 or more diseases in elderly Japanese patients. METHODS: We included all Japanese citizens aged 75 or older living in Tokyo who used medical care between September 2013 and August 2014 (N = 1,311,116) in our analysis. The 15 most common 3-way patterns of 22 target diseases according to sex and age were identified from among all possible combinations by using an anonymized medical claims database. We examined the associations of sociodemographic characteristics and health care use with the presence of 1 or 2 co-occurring diseases and 3 or more co-occurring diseases by using multinomial logistic regression. RESULTS: Approximately 65% of patients had 3 or more co-occurring diseases. The most common 3-way pattern was hypertension, coronary heart disease, and peptic ulcer disease in men (12.4%) and hypertension, dyslipidemia, and peptic ulcer disease in women (12.8%). The prevalence of 3 or more diseases was positively associated with men, patients aged 85 to 90, the use of home medical care services, the number of outpatient facilities visited, and hospital admissions. CONCLUSION: The common 3-way disease patterns and multimorbidity factors identified in our study may facilitate the recognition of high-risk patients and support the development of clinical guidelines for multimorbidity.

    DOI: 10.5888/pcd16.180170

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  • 東京都内に保険証住所地がある在宅医療患者への都外医療機関による訪問診療

    石崎 達郎, 光武 誠吾, 寺本 千恵, 清水 沙友里, 井藤 英喜

    厚生の指標 = Journal of health and welfare statistics   65 ( 13 )   1 - 7   2018.11

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  • 大都市圏における在宅医療患者の退院後30日以内の再入院に影響する医療施設要因

    光武 誠吾, 石崎 達郎, 寺本 千恵, 土屋 瑠見子, 清水 沙友里, 井藤 英喜

    日本老年医学会雑誌   55 ( 4 )   612 - 623   2018.10

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  • [The associations between readmission within 30 days and the medical institute factors among older patients receiving home medical care]. Reviewed

    Seigo Mitsutake, Tatsuro Ishizaki, Chie Teramoto, Rumiko Tsuchiya-Ito, Sayuri Shimizu, Hideki Ito

    Nihon Ronen Igakkai zasshi. Japanese journal of geriatrics   55 ( 4 )   612 - 623   2018

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    DOI: 10.3143/geriatrics.55.612

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  • Epidemiological study of adult-onset Still's disease using a Japanese administrative database. Reviewed International journal

    Nobuo Sakata, Sayuri Shimizu, Fumio Hirano, Kiyohide Fushimi

    Rheumatology international   36 ( 10 )   1399 - 405   2016.10

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    DOI: 10.1007/s00296-016-3546-8

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  • Prevalence, prescribed quantities, and trajectory of multiple prescriber episodes for benzodiazepines: A 2-year cohort study. Reviewed International journal

    Yasuyuki Okumura, Sayuri Shimizu, Toshihiko Matsumoto

    Drug and alcohol dependence   158   118 - 25   2016.1

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    DOI: 10.1016/j.drugalcdep.2015.11.010

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  • “Ageing in Place” Policy in Japan: Association Between the Development of an Integrated Community Care System and the Number of Nursing Home Placements Under the Public Long-Term Care Insurance Program Among Municipal Governments Reviewed

    Miharu Nakanishi, Sayuri Shimizu, Takashi Murai, Atsushi Yamaoka

    Ageing International   40 ( 3 )   248 - 261   2015.9

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    DOI: 10.1007/s12126-014-9215-x

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  • Has the Reform of the Japanese Healthcare Provision System Improved the Value in Healthcare? A Cost-Consequence Analysis of Organized Care for Hip Fracture Patients. Reviewed International journal

    Haruhisa Fukuda, Sayuri Shimizu, Tatsuro Ishizaki

    PloS one   10 ( 7 )   e0133694   2015

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    DOI: 10.1371/journal.pone.0133694

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  • 日本全国の生活保護受給者への抗不安・睡眠薬処方の地域差

    奥村 泰之, 藤田 純一, 松本 俊彦, 立森 久照, 清水 沙友里

    臨床精神薬理   17 ( 11 )   1561 - 1575   2014.11

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  • Patterns in the Prescription of Drugs to Elderly Delirium Patients and the Impact of Psychiatric Intervention: A nationwide cohort study in Japan Reviewed

    Sayuri Shimizu, Kiyohide Fushimi

    Studies in Health Technology and Informatics   205   1211   2014

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    DOI: 10.3233/978-1-61499-432-9-1211

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  • Characteristics, procedural differences, and costs of inpatients with drug poisoning in acute care hospitals in Japan Reviewed

    Yasuyuki Okumura, Sayuri Shimizu, Koichi B. Ishikawa, Shinya Matsuda, Kiyohide Fushimi, Hiroto Ito

    General Hospital Psychiatry   34 ( 6 )   681 - 685   2012.11

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    DOI: 10.1016/j.genhosppsych.2012.07.009

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  • ANALYSIS OF CHANGES IN ACCESSIBILITY BY TRANSFERRING PATIENTS FROM ACUTE CARE HOSPITALS TO CONVALESCENT HOSPITALS USING GEOGRAPHIC INFORMATION SYSTEM (GIS) : A regional cooperative critical-path for femoral neck fracture as an example

    SHIMIZU Sayuri, FUKUDA Haruhisa

    Journal of the Japan Society for Healthcare Administration   49 ( 3 )   173 - 181   2012.7

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    Promotion of regional referral systems, such as regional cooperative critical-paths, enables patients to effectively and safely receive medical care, while benefiting from the advancement and specialization of technology. On the other hand, the influence of the promotion of referral systems on accessibility, such as trends in the movement of patients has scarcely been elucidated.<br>Therefore, the purpose of this study was (1) to visualize the areas from which patients are drawn to hospitals, and (2) to elucidate changes in accessibility by transferring patients to convalescent hospitals using geographic information system (GIS), in acute care hospitals in regions with advanced regional cooperation.<br>In this study, substantial areas covered by acute care hospitals were wider than secondary medical areas, and 32.5% patients were transferred to convalescent hospitals outside the secondary medical areas. Geographic dissociation between secondary medical areas established by the Medical Service Act and the actual areas covered by hospitals were clarified. It was suggested that the evaluation of accessibility using GIS can be utilized in developing health resources reflecting the actual state of health care and in making health plans.

    DOI: 10.11303/jsha.49.173

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  • Comparison of emergency hospital admissions for drug poisoning and major diseases: a retrospective observational study using a nationwide administrative discharge database. Reviewed International journal

    Yasuyuki Okumura, Sayuri Shimizu, Koichi B Ishikawa, Shinya Matsuda, Kiyohide Fushimi, Hiroto Ito

    BMJ open   2 ( 6 )   2012

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    DOI: 10.1136/bmjopen-2012-001857

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  • データで変える病院経営

    後藤, 隆久, 原, 広司, 田中, 利樹, 黒木, 淳, 今中, 雄一

    中央経済社,中央経済グループパブリッシング (発売)  2022.3  ( ISBN:9784502419218

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  • 【臨床研究論文を味わう:系統的レビュー・メタ解析とビッグデータ解析のお作法】ビッグデータ解析の実際と読み方・実施のポイント 彼を知り己を知れば百戦殆うからず(孫子)

    清水 沙友里

    LiSA   30 ( 6 )   676 - 680   2023.6

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  • Nationwide Status of the Incidence, Management, and In-hospital Outcomes of Critical Limb Ischemia(タイトル和訳中)

    岩田 究, 仁田 学, 金子 惇, 伏見 清秀, 植田 真一郎, 清水 沙友里

    日本循環器学会学術集会抄録集   87回   OJ47 - 4   2023.3

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  • 健康無関心と生活習慣の関連 横浜市の行政調査を活用した横断研究

    中西 博紀, 金子 惇, 清水 沙友里, 黒木 淳, 矢島 陽子, 東 健一, 岩松 美樹, 後藤 温

    Journal of Epidemiology   33 ( Suppl.1 )   95 - 95   2023.2

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  • ACHD・心不全の緩和医療 JROAD-DPCデータを用いた成人先天性心疾患死亡例の実態調査 重症度別の検討

    秋山 直美, 倉岡 彩子, 落合 亮太, 仁田 学, 石津 智子, 中井 陸運, 住田 陽子, 金子 惇, 清水 沙友里, 家田 真樹

    日本小児循環器学会総会・学術集会抄録集   58回   [II - 03]   2022.7

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  • 都市部の高齢者のケアは分断されている データベースを用いた横断研究

    金子 惇, 篠田 覚, 清水 沙友里, 黒木 淳, 中神 幸子, 千葉 大雅, 後藤 温

    日本プライマリ・ケア連合学会学術大会   13回   O - 5   2022.6

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  • ビッグデータとAIにより広がる近未来予想図

    清水 沙友里

    臨床モニター   33 ( Suppl. )   32 - 32   2022.6

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  • 最新のACHDレジストリ研究 先天性心疾患女性による分娩のアウトカムDPCデータベースを用いた後向きコホート研究

    仁田 学, 清水 沙友里, 金子 惇, 伏見 清秀, 植田 真一郎

    日本成人先天性心疾患学会雑誌   11 ( 1 )   177 - 177   2022.1

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  • 大規模医療データベースを活用した臨床疫学研究 大規模医療データベースを活用した臨床疫学研究の事例とその使い方

    清水 沙友里

    日本高血圧学会総会プログラム・抄録集   43回   168 - 168   2021.10

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  • 超高齢者のecology of medical care:Yokohama Original Medical Databeseを用いた都市部75歳以上住民の悉皆調査

    金子 惇, 清水 沙友里, 黒木 淳, 中神 幸子, 千葉 大雅, 後藤 温

    日本プライマリ・ケア連合学会学術大会   12回   np1171 - np1171   2021.5

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  • COVID-19パンデミック早期における予防可能な入院への影響 DPC全国統計を用いた差分の差分分析

    金子 惇, 清水 沙友里, 伏見 清秀

    日本プライマリ・ケア連合学会学術大会   12回   np1169 - np1169   2021.5

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  • がん患者が心理療法の選択で重視する要素 コンジョイント分析を用いたニーズ調査

    市倉 加奈子, 竹下 若那, 清水 沙友里, 大島 乃里子, 有泉 陽介, 藤江 俊秀, 山内 慎一, 石川 敏昭, 中島 康晃, 深瀬 裕子, 村瀬 華子, 田ヶ谷 浩邦, 竹内 崇, 松島 英介

    総合病院精神医学   32 ( Suppl. )   S - 187   2020.11

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  • 【医薬品の安全性情報を読み解く-添付文書と疫学データ読解講座-】医療情報データベースを用いた医薬品安全性監視の可能性と限界

    清水 沙友里

    精神科治療学   33 ( 5 )   569 - 572   2018.5

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  • 75 歳以上の外来維持期リハビリテーション患者は 介護保険下のリハビリテーションに移行できるか. Reviewed

    光武誠吾, 石崎達郎, 藤本修平, 清水沙友里, 井藤英喜

    総合リハビリテーション   46 ( 9 )   867 - 873   2018

  • 製造販売後調査(Post Marketing Surveillance:PMS)における商用データベースの利活用可能性の検討 パニツムマブ特定使用成績調査(全例調査)を例に

    清水 沙友里, 五十嵐 中, 康永 秀生

    日本薬剤疫学会学術総会抄録集   23回   73 - 74   2017.11

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  • 研究部レポート ナショナルデータベースの学術利用促進に向けて : レセプトの落とし穴

    奥村 泰之, 佐方 信夫, 清水 沙友里, 松居 宏樹

    Monthly IHEP   ( 268 )   16 - 25   2017.10

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    Language:Japanese   Publisher:医療経済研究機構  

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  • 後期高齢者の受診医療機関数と多剤処方の関連

    石崎達郎, 光武誠吾, 寺本千恵, 山岡巧弥, 清水沙友里, 井藤英喜

    日本老年医学会雑誌   54 ( Suppl. )   186 - 186   2017.5

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  • 抗不安・睡眠薬におけるドクターショッピングの実態 大規模レセプト情報データベースの活用

    奥村 泰之, 清水 沙友里, 松本 俊彦

    精神神経学雑誌   ( 2016特別号 )   S333 - S333   2016.6

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    Language:Japanese   Publisher:(公社)日本精神神経学会  

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  • 東京都の後期高齢者における在宅医療患者数の推計

    石崎達郎, 寺本千恵, 光武誠吾, 清水沙友里, 井藤英喜

    日本老年医学会雑誌   53 ( Suppl. )   135 - 136   2016.5

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    Language:Japanese  

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  • 急性期医療機関のせん妄発症入院患者に対する向精神薬処方と精神科医の関与 DPC/PDPSデータを用いた後ろ向きコホート研究

    清水 沙友里, 石川 ベンジャミン光一, 伊藤 弘人, 伏見 清秀

    日本医療・病院管理学会誌   51 ( Suppl. )   202 - 202   2014.8

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    Language:Japanese   Publisher:(一社)日本医療・病院管理学会  

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  • Toward enhancing reporting quality of clinical epidemiology research : ethics for researchers

    24 ( 5 )   551 - 557   2014.5

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  • 急性期病院の緊急入院患者における急性医薬品中毒の特徴 DPC調査データの分析

    奥村 泰之, 清水 沙友里, 石川 光一, 松田 晋哉, 伏見 清秀, 伊藤 弘人

    精神神経学雑誌   ( 2012特別 )   S - 280   2012.5

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  • 一般急性期病床における向精神薬処方実態 DPCデータを用いた分析

    清水 沙友里, 石川 光一, 伊藤 弘人, 松田 晋哉, 伏見 清秀

    精神神経学雑誌   ( 2011特別 )   S - 429   2011.10

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  • 一般急性期病院入院患者への向精神薬の使用実態

    伊藤 弘人, 清水 沙友里, 奥村 泰之, 石川 光一, 松田 晋哉, 伏見 清秀

    日本臨床精神神経薬理学会・日本神経精神薬理学会合同年会プログラム・抄録集   21回・41回   80 - 80   2011.10

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    Language:Japanese   Publisher:日本臨床精神神経薬理学会・日本神経精神薬理学会  

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Presentations

  • 生物統計セミナー「.明日から使える医療統計〜クリニカルクエスチョンから論文作成まで一気通貫 part 2」

    清水沙友里

    第264回日本循環器学会関東甲信越地方会  2022.5 

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    Event date: 2022.5 - 2022.6

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • ビッグデータとAIにより広がる近未来予想図 Invited

    清水沙友里

    第33回日本臨床モニター学会総会  2022.6 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • 医療機関マスタ分科会 Invited

    清水沙友里, 遠藤英樹, 金子惇

    第5回NDBユーザー会  2022.9 

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Research Projects

  • A型急性大動脈解離発症予防のための大動脈壁プロテオーム解析と疫学的検討

    Grant number:24K11955  2024.4 - 2028.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    内田 敬二, 水原 敬洋, 斎藤 綾, 清水 沙友里, 木村 弥生

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    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

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  • レセプト情報・特定健診等情報データベースを用いた集中治療後症候群の発症因子の検討

    Grant number:21K09088  2021.4 - 2024.3

    日本学術振興会  科学研究費助成事業 基盤研究(C)  基盤研究(C)

    下山 雄一郎, 清水 沙友里

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    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    【本研究の目的】NDB を用いて PICS の発症予測因子を明らかにすることにより、PICS 予防のために、重点的に改善するよう指導すべき NDB に収載された特定健診・保健指導データの各項目(BMI、腹囲、空腹時血糖、HbA1c、収縮期血圧、拡張期血圧など)を浮き彫りにし、医療費や介護費の適正化、さらには国民の QOL 向上につなげる研究成果を出すことが本研究の目的である。
    【令和3年度年次計画】PICS 関連の論文を収集し、PICS の発症予測因子についてどこまで解明されているかさらに詳細に調べる。・厚生労働省からデータの提供後、株式会社NTT データ第2公共事業本部 社会保障事業部にデータベースの構築を依頼する。
    当該研究について、研究計画調書に記載した令和3年度年次計画は上記の通りである。令和3年度の計画、「PICS 関連の論文を収集し、PICS の発症予測因子についてどこまで解明されているかさらに詳細に調べる。」については計画通り進んでおり、世界的に見て本研究のような大規模研究はないことから早急に研究成果を出すことを再認識した。データベースの構築については、従来の計画ではNTTデータに依頼する予定であったが、費用の関係から別会社にお願いすることにした。NDB取り扱い者変更届を現在申請中であり、許可され次第データベースの構築を依頼する。厚生労働省から、生データの提供は当該報告書作成時点(令和4年度)では、すでに受けており、適切に保管している。データベースの構築後、データ解析を行う予定である。また、後述の通り、当該研究と関連する敗血症に関する論文を令和3年度も継続して投稿し、筆頭著者として6編の論文が出版されている。

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  • 複数疾病を伴う高齢入院患者の予後予測因子の同定:機械学習モデルの解釈性の向上

    Grant number:18K18471  2018.6 - 2021.3

    日本学術振興会  科学研究費助成事業 挑戦的研究(萌芽)  挑戦的研究(萌芽)

    清水 沙友里, 原 聡, 伏見 清秀

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    Grant amount:\4940000 ( Direct Cost: \3800000 、 Indirect Cost:\1140000 )

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  • 地域医療支援病院等の医療提供体制上の位置づけに関する研究

    2017.4 - 2020.3

    厚生労働省  厚生労働行政推進調査事業費補助金 

    伏見清秀

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    Authorship:Coinvestigator(s) 

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  • Cross-cultural analysis on alienation caused by ICT-based services and organisational social responsibility

    Grant number:25285124  2013.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Murata Kiyoshi, ADAMS Andrew, ASAI Ryoko, ORITO Yohko, SHIMIZU Sayuri, SUZUKI Shizuka

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    Grant amount:\16900000 ( Direct Cost: \13000000 、 Indirect Cost:\3900000 )

    In the participatory surveillance environment where personal data on individuals are collected, stored and exploited by organisations to provide them with personalised services using advanced information and communication technologies, individuals are treated as dividuals, not individuals. The nature of dividualisation is associated with dis/re-embodiment of the individual, and leads to the objectification and partialisation of human beings. Due to this objectification, holistic approaches to understanding individuals are undermined, and this may seriously affect individuals' ways of thinking, ideas of what an individual is, and paradigms of good societies, leading to alienation of human beings. In this study, the "Dividualisation Model", which describes this situation, has been developed, and various kinds of investigations based on this model have been conducted.

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  • Development of indicators for healthcare, education, training and research of national university hospitals

    Grant number:19590509  2007 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    FUSHIMI Kiyohide

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    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

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