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Nakahata M, Tanaka-Mizuno S, Yamaguchi F, Takeuchi M, Kawakami K. Does nutritional guidance reduce cardiovascular events in patients with type 2 diabetes mellitus? A retrospective cohort study using a nationwide claims database. Acta Diabetol 2023; 60:1541-1549. [PMID: 37421440 DOI: 10.1007/s00592-023-02147-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 06/25/2023] [Indexed: 07/10/2023]
Abstract
AIM To examine the effect of nutritional guidance (NG) provided by a registered dietitian under the direction of a physician on the development of subsequent cardiovascular events in patients with early-stage type 2 diabetes mellitus (T2DM). MATERIALS AND METHODS This retrospective cohort study used the JMDC claims database to explore patients aged 18 years or older who first met the diagnostic criteria for T2DM at a health checkup between January 2011 and January 2019. The last day of the observation period was set for 28 February, 2021. Exposure was defined as receiving NG within 180 days of diagnosis of T2DM. The primary outcome was a composite endpoint of coronary artery disease (CAD) and cerebrovascular disease, and the secondary outcomes were each event, and time to event was compared. The propensity score weighting method was used for adjusting the distribution of confounding variables. Cox regression was conducted to estimate hazard ratios (HRs) and 95% confidence intervals (CIs). RESULTS Overall, 31,378 patients met the eligibility criteria at an annual health checkup. 9.6% received NG (n = 3013). Patients who attended ≥ 1 NG after diagnosis had significantly reduced risk of cardiovascular composite (adjusted HR 0.75, 95% CI 0.58-0.97) and cerebrovascular disease (adjusted HR 0.65, 95% CI 0.47-0.90) during approximately 3.3 years of follow-up. In contrast, no difference was observed for CAD. CONCLUSIONS Receiving NG in early-stage diabetes may reduce the incidence of cardiovascular events, especially cerebrovascular events.
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Affiliation(s)
- Misaki Nakahata
- Department of Pharmacoepidemiology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-Cho, Sakyo-Ku, Kyoto, 606-8501, Japan
| | - Sachiko Tanaka-Mizuno
- Department of Pharmacoepidemiology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-Cho, Sakyo-Ku, Kyoto, 606-8501, Japan.
- Department of Digital Health and Epidemiology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-Cho, Sakyo-Ku, Kyoto, 606-8501, Japan.
| | - Fumitaka Yamaguchi
- Department of Pharmacoepidemiology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-Cho, Sakyo-Ku, Kyoto, 606-8501, Japan
| | - Masato Takeuchi
- Department of Pharmacoepidemiology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-Cho, Sakyo-Ku, Kyoto, 606-8501, Japan
| | - Koji Kawakami
- Department of Pharmacoepidemiology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-Cho, Sakyo-Ku, Kyoto, 606-8501, Japan
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YOSHIDA S, TAKEUCHI M, TANAKA-MIZUNO S, MIZUNO K, NAKASHIMA M, FUKASAWA T, KAWAKAMI K. Clinical epidemiology and pharmacoepidemiology studies with real-world databases. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2022; 98:517-528. [PMID: 36504194 PMCID: PMC9751262 DOI: 10.2183/pjab.98.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 10/03/2022] [Indexed: 06/17/2023]
Abstract
Hospital-based registry data, including patients' information collected by academic societies or government based research groups, were previously used for clinical research in Japan. Now, real-world data routinely obtained in healthcare settings are being used in clinical epidemiology and pharmacoepidemiology. Real-world data include a database of claims originating from health insurance associations for reimbursement of medical fees, diagnosis procedure combinations databases for acute inpatient care in hospitals, a drug prescription database, and electronic medical records, including patients' medical information obtained by doctors, derived from electronic records of hospitals. In the past ten years, much evidence of clinical epidemiology and pharmacoepidemiology studies using real-world data has been accumulated. The purpose of this review was to introduce clinical epidemiology and pharmacoepidemiology approaches and studies using real-world data in Japan.
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Affiliation(s)
- Satomi YOSHIDA
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Masato TAKEUCHI
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Sachiko TANAKA-MIZUNO
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Kayoko MIZUNO
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Masayuki NAKASHIMA
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Toshiki FUKASAWA
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Koji KAWAKAMI
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
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de Jong M, Peters SAE, de Ritter R, van der Kallen CJH, Sep SJS, Woodward M, Stehouwer CDA, Bots ML, Vos RC. Sex Disparities in Cardiovascular Risk Factor Assessment and Screening for Diabetes-Related Complications in Individuals With Diabetes: A Systematic Review. Front Endocrinol (Lausanne) 2021; 12:617902. [PMID: 33859615 PMCID: PMC8043152 DOI: 10.3389/fendo.2021.617902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 02/11/2021] [Indexed: 11/24/2022] Open
Abstract
Background Insight in sex disparities in the detection of cardiovascular risk factors and diabetes-related complications may improve diabetes care. The aim of this systematic review is to study whether sex disparities exist in the assessment of cardiovascular risk factors and screening for diabetes-related complications. Methods PubMed was systematically searched up to April 2020, followed by manual reference screening and citations checks (snowballing) using Google Scholar. Observational studies were included if they reported on the assessment of cardiovascular risk factors (HbA1c, lipids, blood pressure, smoking status, or BMI) and/or screening for nephropathy, retinopathy, or performance of feet examinations, in men and women with diabetes separately. Studies adjusting their analyses for at least age, or when age was considered as a covariable but left out from the final analyses for various reasons (i.e. backward selection), were included for qualitative analyses. No meta-analyses were planned because substantial heterogeneity between studies was expected. A modified Newcastle-Ottawa Quality Assessment Scale for cohort studies was used to assess risk of bias. Results Overall, 81 studies were included. The majority of the included studies were from Europe or North America (84%).The number of individuals per study ranged from 200 to 3,135,019 and data were extracted from various data sources in a variety of settings. Screening rates varied considerably across studies. For example, screening rates for retinopathy ranged from 13% to 90%, with half the studies reporting screening rates less than 50%. Mixed findings were found regarding the presence, magnitude, and direction of sex disparities with regard to the assessment of cardiovascular risk factors and screening for diabetes-related complications, with some evidence suggesting that women, compared with men, may be more likely to receive retinopathy screening and less likely to receive foot exams. Conclusion Overall, no consistent pattern favoring men or women was found with regard to the assessment of cardiovascular risk factors and screening for diabetes-related complications, and screening rates can be improved for both sexes.
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Affiliation(s)
- Marit de Jong
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Sanne A. E. Peters
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- The George Institute for Global Health, Imperial College London, London, United Kingdom
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia
| | - Rianneke de Ritter
- Department of Internal Medicine, Maastricht University Medical Center, Maastricht, Netherlands
- CARIM Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
| | - Carla J. H. van der Kallen
- Department of Internal Medicine, Maastricht University Medical Center, Maastricht, Netherlands
- CARIM Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
| | - Simone J. S. Sep
- Department of Internal Medicine, Maastricht University Medical Center, Maastricht, Netherlands
- CARIM Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
- Centre of Expertise in Rehabilitation and Audiology, Adelante, Hoensbroek, Netherlands
| | - Mark Woodward
- The George Institute for Global Health, Imperial College London, London, United Kingdom
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia
- Department of Epidemiology, Johns Hopkins University, Baltimore, MD, United States
| | - Coen D. A. Stehouwer
- Department of Internal Medicine, Maastricht University Medical Center, Maastricht, Netherlands
- CARIM Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
| | - Michiel L. Bots
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Rimke C. Vos
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Department Public Health and Primary Care / LUMC-Campus The Hagua, Leiden University Medical Center, Hague, Netherlands
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Sugiyama T, Imai K, Ihana-Sugiyama N, Tanaka H, Yanagisawa-Sugita A, Sasako T, Higashi T, Okamura T, Yamauchi T, Ueki K, Ohsugi M, Kadowaki T. Variation in process quality measures of diabetes care by region and institution in Japan during 2015-2016: An observational study of nationwide claims data. Diabetes Res Clin Pract 2019; 155:107750. [PMID: 31229599 DOI: 10.1016/j.diabres.2019.05.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 04/26/2019] [Accepted: 05/22/2019] [Indexed: 01/19/2023]
Abstract
AIMS To calculate process quality measures of diabetes care in Japan using nationwide exclusive claims database. METHODS Using the National Database of health insurance claims during 2015-2016, the proportions of outpatients who received recommended examinations at least annually among those with regular antidiabetic medication were calculated as quality indicators, reported altogether and by prefecture and institutional certification (from the Japan Diabetes Society). Distributions of institutional-level quality indicators were also reported. RESULTS Among 4,154,452 outpatients, 96.7% underwent HbA1c or glycated albumin examination. Retinopathy examination was conducted among 46.5% of patients [prefecture (range): 37.5%-51.0%, institutional certification: 44.8% (without) vs. 59.8% (with)]. Urinary qualitative examination was conducted among 67.3% of patients at institutions with <200 beds (prefecture: 54.1%-81.9%, institutional certification: 66.8% vs. 92.8%), whereas urinary quantitative albumin or protein examination was conducted among 19.4% of patients (prefecture: 10.8%-31.6%, institutional certification: 18.7% vs. 54.8%). Distributions of institutional-level quality indicators showed that most institutions without institutional certification seldomly order urinary quantitative examination. CONCLUSIONS Although the quality indicator for glycaemic control examination was favourable, some aspects of diabetes care were suboptimal and varied greatly by prefecture and institution; individual and organisational efforts to improve quality of diabetes care would be needed in Japan.
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Affiliation(s)
- Takehiro Sugiyama
- Diabetes and Metabolism Information Center, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan; Department of Public Health/Health Policy, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan; Department of Health Services Research, Faculty of Medicine, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki 305-8575, Japan.
| | - Kenjiro Imai
- Diabetes and Metabolism Information Center, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
| | - Noriko Ihana-Sugiyama
- Diabetes and Metabolism Information Center, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
| | - Hirokazu Tanaka
- Diabetes and Metabolism Information Center, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan; Department of Public Health/Health Policy, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan.
| | - Ayako Yanagisawa-Sugita
- Diabetes and Metabolism Information Center, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan; Department of Public Health/Health Policy, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan.
| | - Takayoshi Sasako
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Takahiro Higashi
- Center for Cancer Registries, Center for Cancer Control and Information Services, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Tomonori Okamura
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Kohjiro Ueki
- Diabetes Research Center, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
| | - Mitsuru Ohsugi
- Diabetes and Metabolism Information Center, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
| | - Takashi Kadowaki
- Department of Prevention of Diabetes and Lifestyle-Related Diseases, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; Department of Metabolism and Nutrition, Teikyo University Mizonokuchi Hospital, 5-1-1 Futago, Takatsu-ku, Kawasaki, Kanagawa 213-8507, Japan.
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