ArticleBMC research notes2023
Research note changes in the number of outpatient visits in Japan during the COVID-19 pandemic.
Article in BMC research notes, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 10 citations in OpenAlex.
- Social Isolation and Health Outcomes in Japan: A Nationwide Cross-Sectional Study.JMA journal · 2026Article
- Loneliness, Chronic Conditions, and Healthcare Engagement in Japan: A Nationwide Cross-Sectional Study.JMA journal · 2026Article
- Retrospective real-world database study to examine the prevalence and incidence of cardiovascular diseases and medication prescription in Japanese patients with type 2 diabetes.Diabetology international · 2026Article
- Impact of COVID-19 on paediatric care in Japan: Analysis of national health insurance claims data.Acta paediatrica (Oslo, Norway : 1992) · 2025Article
- Current Status of Prurigo Nodularis in Japan: A Retrospective Study Using a Health Insurance Claims Database.Journal of clinical medicine · 2025Article
- Impact of Public Health and Social Measures on Cosmetic Treatments in the COVID-19 Pandemic: A Retrospective Multi-Center Study Combined With a Questionnaire-Based Cross-Sectional Study.Journal of cosmetic dermatology · 2024Article
- Preserved seasonal variation in glycemic control in patients with type 2 diabetes mellitus during COVID-19: a 3-year-long retrospective cohort study in older adults in Japan.BMC endocrine disorders · 2024Article
- Prevalence of urgent hospitalizations caused by adverse drug reactions: a cross-sectional study.Scientific reports · 2024Article
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Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
objectiveThis study aimed to determine the change in the number of outpatient visits in Japan since the beginning of the COVID-19 pandemic, using data on the outpatient claims submitted by medical institutions to insurers in 2019 and 2020, from the National Database of Health Insurance Claims and Specific Health Check-ups. We calculated the total number of outpatient visits, and number of visits for individual diseases according to the International Classification of Diseases-10 codes on the claim form.
resultsThe number of outpatient visits per million people decreased by 9.98% in 2020 compared to 2019. Of the diseases included in the analysis, 71 showed a decrease in the number of visits by ≥ 1%. There were significant decreases in the number of visits related to infectious diseases (influenza, acute bronchitis, and acute laryngitis, etc.), and chronic diseases (hemorrhoids, cystic kidney disease, dyspepsia, and chronic sinusitis, etc.). The observed decreased rate of outpatient visit might have been due to, a decrease in the incidence of disease, a decreased frequency of visit by patients with the disease, or both. Our analysis method using actual health insurance claim data can be applied worldwide, where researchers have access to national information on health insurance claims.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.