{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,21]],"date-time":"2026-06-21T15:33:56Z","timestamp":1782056036627,"version":"3.54.5"},"reference-count":25,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T00:00:00Z","timestamp":1760572800000},"content-version":"vor","delay-in-days":288,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T00:00:00Z","timestamp":1735689600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pediatric Diabetes"],"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:p>\n                    Since COVID\u201019 onset, pediatric endocrinologists have been making an assumption that there was a shift in diagnosis age of type 1 diabetes mellitus (T1DM) to younger children. Younger children are more likely to present in DKA, are more difficult to diagnose and treat, and age at diagnosis can affect prognosis. We performed a retrospective chart review of patients diagnosed with T1DM for 3 years before COVID\u201019 and the 3 years during COVID\u201019. Demographics were evaluated using the Chi\u2010squared test for categorical data and Student\u2019s\n                    <jats:italic>t<\/jats:italic>\n                    \u2010test or ANOVA for continuous data. During this time, 698 patients were diagnosed with T1DM, with more patients during COVID\u201019. The average age of diagnosis significantly increased by 0.7 years (\n                    <jats:italic>p<\/jats:italic>\n                    = 0.025). There was a significant difference in the distribution of age groups between the two time periods (\n                    <jats:italic>p<\/jats:italic>\n                    = 0.0065). There was a significant decrease in new cases among patients between the ages of 2\u20135 years from 2017 to 2020, a transient finding as they reverted back to previous rates by 2022. New diagnoses between 13 and 18 years were increasing prior to 2020 (7%\u201323%), subsequently leveling out. Patients were 1.6 times more likely to present in DKA during COVID\u201019; however, there was no significant change in hemoglobin A1c (HbA1c). There was no significant change in thyroperoxidase (TPO) antibody positivity. There was a significant decrease (\n                    <jats:italic>p<\/jats:italic>\n                    = 0.018) in patients with elevated tissue transglutaminase (TTG)\u2010IgA from pre\u2010COVID to post\u2010COVID. Average age at diagnosis in our cohort increased since the start of COVID\u201019, contradicting previous studies and our hypothesis. The number of new cases increased, and the age distribution changed. There was a significant decrease in number of younger patients in 2020, followed by a normalization of new cases in those 2\u20135 years old, which may have led to the belief that more toddlers were being diagnosed. The rate of other antibodies did not increase. These results illustrate that changes in demographics may have been short\u2010lived post\u2010COVID\u201019.\n                  <\/jats:p>","DOI":"10.1155\/pedi\/7276579","type":"journal-article","created":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T12:22:06Z","timestamp":1760617326000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Change in Age of Diagnosis and Demographics of Type 1 Diabetes Mellitus During the COVID\u201019 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