{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T11:46:11Z","timestamp":1788522371394,"version":"build-2803163510"},"reference-count":40,"publisher":"American Diabetes Association","issue":"6","license":[{"start":{"date-parts":[[2025,3,3]],"date-time":"2025-03-03T00:00:00Z","timestamp":1740960000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.diabetesjournals.org\/journals\/pages\/license"}],"funder":[{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"crossref","award":["PJ9-192251"],"award-info":[{"award-number":["PJ9-192251"]}],"id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"crossref","award":["PJT-156286"],"award-info":[{"award-number":["PJT-156286"]}],"id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"crossref","award":["PJT-195810"],"award-info":[{"award-number":["PJT-195810"]}],"id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["diabetesjournals.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2025,6,1]]},"abstract":"<jats:sec>\n                    <jats:title>OBJECTIVE<\/jats:title>\n                    <jats:p>The International Diabetes Federation recently endorsed a 1-h oral glucose tolerance test (OGTT) as more convenient than the conventional 2-h OGTT. In practice, women with hyperglycemia in pregnancy are advised to undergo a 2-h OGTT within 6 months after delivery, but this test is often not completed, partly owing to its inconvenience for busy mothers. Recognizing the potential advantage of the 1-h OGTT in this setting, we sought to compare 1-h and 2-h OGTT glucose measurements at 3 months postpartum as predictors of dysglycemia (prediabetes\/diabetes) over the first 5 years postpartum.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESEARCH DESIGN AND METHODS<\/jats:title>\n                    <jats:p>A total of 369 women across a range of glucose tolerance in pregnancy (from normoglycemia to gestational diabetes [GDM]) underwent multisample 2-h 75-g OGTTs at 3 months, 1 year, 3 years, and 5 years postpartum. Glucose measurements from the 3-month OGTT were ranked as predictors of dysglycemia (both criteria) by change in concordance index (CCI) of Cox proportional hazard regression models.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>At the 3-month OGTT, 1-h glucose identified all but 10 of 70 women concurrently diagnosed with dysglycemia by 2-h glucose, while diagnosing an additional 96 women. The cumulative incidence of dysglycemia progressively increased over 5 years by tertile of 1-h glucose on the 3-month OGTT (P &amp;lt; 0.0001). On regression analyses, the strongest predictor of dysglycemia was 1-h glucose (change in CCI: 16.1%), followed by 2-h glucose (14.9%). In women with GDM, 1-h glucose again emerged as strongest predictor of dysglycemia (13.0%), followed by 2-h glucose (12.8%).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSIONS<\/jats:title>\n                    <jats:p>The 1-h OGTT may offer a strategy for increasing rates of postpartum reclassification following hyperglycemia in pregnancy.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2337\/dc24-1848","type":"journal-article","created":{"date-parts":[[2025,3,3]],"date-time":"2025-03-03T09:02:02Z","timestamp":1740992522000},"page":"887-895","update-policy":"https:\/\/doi.org\/10.2337\/ada-journal-policies","source":"Crossref","is-referenced-by-count":12,"title":["One-Hour Oral Glucose Tolerance Test for the Postpartum Reclassification of Women With Hyperglycemia in Pregnancy"],"prefix":"10.2337","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1989-027X","authenticated-orcid":false,"given":"Ravi","family":"Retnakaran","sequence":"first","affiliation":[{"name":"1Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Canada"},{"name":"2Division of Endocrinology, University of Toronto, Toronto, Canada"},{"name":"3Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chang","family":"Ye","sequence":"additional","affiliation":[{"name":"1Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Caroline K.","family":"Kramer","sequence":"additional","affiliation":[{"name":"1Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Canada"},{"name":"2Division of Endocrinology, University of Toronto, Toronto, Canada"},{"name":"3Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anthony J.","family":"Hanley","sequence":"additional","affiliation":[{"name":"1Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Canada"},{"name":"2Division of Endocrinology, University of Toronto, Toronto, Canada"},{"name":"4Department of Nutritional Sciences, University of Toronto, Toronto, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philip W.","family":"Connelly","sequence":"additional","affiliation":[{"name":"2Division of Endocrinology, University of Toronto, Toronto, Canada"},{"name":"5Keenan Research Centre for Biomedical Science, St. Michael\u2019s Hospital, Toronto, Canada"},{"name":"6Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mathew","family":"Sermer","sequence":"additional","affiliation":[{"name":"7Department of Obstetrics and Gynecology, Mount Sinai Hospital, Toronto, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bernard","family":"Zinman","sequence":"additional","affiliation":[{"name":"1Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Canada"},{"name":"2Division of Endocrinology, University of Toronto, Toronto, Canada"},{"name":"3Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1167","published-online":{"date-parts":[[2025,3,3]]},"reference":[{"key":"2025052014522845800_B1","doi-asserted-by":"crossref","first-page":"11589","DOI":"10.1016\/j.diabres.2024.111589","article-title":"International Diabetes Federation position statement on the 1-hour post-load plasma glucose for the diagnosis of 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