{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T16:47:38Z","timestamp":1787503658006,"version":"build-2736575974"},"reference-count":39,"publisher":"BMJ","issue":"10","license":[{"start":{"date-parts":[[2025,10,6]],"date-time":"2025-10-06T00:00:00Z","timestamp":1759708800000},"content-version":"unspecified","delay-in-days":5,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["24K02708"],"award-info":[{"award-number":["24K02708"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2025,9,10]]},"published-print":{"date-parts":[[2025,10]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To estimate uptake of the 75\u2009g oral glucose tolerance test (OGTT) at 6\u201312 weeks postpartum among women with gestational diabetes mellitus (GDM) in Japan, and to explore the demographic and clinical characteristics associated with screening uptake.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Retrospective cohort study using administrative claims data.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>Data from a nationwide employees\u2019 health insurance claims database (Japan Medical Data Center; JMDC) during the fiscal years 2012\u20132020 were assessed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>2282\u2009women with GDM in the JMDC claims database (April 2012\u2013January 2021), ascertained using the International Classification of Diseases 10th revision (ICD-10) codes cross-validated with a high-risk GDM management fee.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Primary and secondary outcome measures<\/jats:title>\n                    <jats:p>Primary outcome: completion of a 75\u2009g OGTT at 6\u201312 weeks postpartum. Secondary outcomes: completion of a 75\u2009g OGTT at 4\u201312 weeks postpartum and cumulative completion up to 1 year postpartum.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>We included 2282\u2009women in the analysis. The overall screening rate was 28.7% (654\/2282) from 2012 to 2020. Even in 2020, the year with the highest reported screening rate, it remained low at 33.2% (181\/546). After expanding the range to include 4 weeks to \u22641 year postpartum, the cumulative screening rate reached 64.9% by 1 year postpartum. The screening rate was lower when childbirth and GDM were managed at different facilities than when both were managed within the same facility.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>We report suboptimal screening rates for women with a GDM history in Japan. This study highlights the need for continuous monitoring and the development of effective strategies for early screening and intervention in this high-risk group. These strategies should include system-level improvements in screening methods and enhance patient awareness through antenatal education prior to delivery.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2024-096259","type":"journal-article","created":{"date-parts":[[2025,10,7]],"date-time":"2025-10-07T07:40:37Z","timestamp":1759822837000},"page":"e096259","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Postpartum diabetes screening for women with gestational diabetes in Japan: an administrative database study"],"prefix":"10.1136","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0482-443X","authenticated-orcid":false,"given":"Toshiki","family":"Yoshioka","sequence":"first","affiliation":[{"name":"Department of Public Health, School of Medicine, Yokohama City University, Yokohama, Japan"},{"name":"Department of Obstetrics and Gynecology, Yokohama City University School of Medicine Graduate School of Medicine, Yokohama, Kanagawa, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masataka","family":"Shikata","sequence":"additional","affiliation":[{"name":"Department of Public Health, Yokohama City University, Yokohama, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3694-4340","authenticated-orcid":false,"given":"Sayuri","family":"Nakanishi","sequence":"additional","affiliation":[{"name":"Perinatal Center for Maternity and Neonate, Yokohama City University Medical Center, Yokohama, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kentaro","family":"Kurasawa","sequence":"additional","affiliation":[{"name":"Yokohama City University Hospital, Yokohama, Kanagawa, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shigeru","family":"Aoki","sequence":"additional","affiliation":[{"name":"Perinatal Center for Maternity and Neonate, Yokohama City University Medical Center, Yokohama, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Etsuko","family":"Miyagi","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Yokohama City University School of Medicine Graduate School of Medicine, Yokohama, Kanagawa, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0669-654X","authenticated-orcid":false,"given":"Atsushi","family":"Goto","sequence":"additional","affiliation":[{"name":"Department of Public Health, Yokohama City University, Yokohama, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2025,10,6]]},"reference":[{"key":"2025120415054058000_15.10.e096259.1","unstructured":"International Diabetes Federation . 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