Trends and cyclic variation in the incidence of childhood type 1 diabetes in two Italian regions over 33 years and during the COVID‐19 pandemic
Aim There is conflicting evidence about the impact of the COVID‐19 pandemic on the incidence of type 1 diabetes. Here, we analysed long‐term trends in the incidence of type 1 diabetes in Italian children and adolescents from 1989 to 2019 and compared the incidence observed during the COVID‐19 pandem...
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Published in | Diabetes, obesity & metabolism Vol. 25; no. 6; pp. 1698 - 1703 |
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Main Authors | , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Publishing Ltd
01.06.2023
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Subjects | |
Online Access | Get full text |
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Summary: | Aim
There is conflicting evidence about the impact of the COVID‐19 pandemic on the incidence of type 1 diabetes. Here, we analysed long‐term trends in the incidence of type 1 diabetes in Italian children and adolescents from 1989 to 2019 and compared the incidence observed during the COVID‐19 pandemic with that estimated from long‐term data.
Materials and Methods
This was a population‐based incidence study using longitudinal data from two diabetes registries in mainland Italy. Trends in the incidence of type 1 diabetes from 1 January 1989 to 31 December 2019 were estimated using Poisson and segmented regression models.
Results
There was a significant increasing trend in the incidence of type 1 diabetes of 3.6% per year [95% confidence interval (CI): 2.4‐4.8] between 1989 and 2003, a breakpoint in 2003, and then a constant incidence until 2019 (0.5%, 95% CI: ‐1.3 to 2.4). There was a significant 4‐year cycle in incidence over the entire study period. The rate observed in 2021 (26.7, 95% CI: 23.0‐30.9) was significantly higher than expected (19.5, 95% CI: 17.6‐21.4; p = .010).
Conclusion
Long‐term incidence analysis showed an unexpected increase in new cases of type 1 diabetes in 2021. The incidence of type 1 diabetes now needs continuous monitoring using population registries to understand better the impact of COVID‐19 on new‐onset type 1 diabetes in children. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1462-8902 1463-1326 |
DOI: | 10.1111/dom.15024 |