Trends of Diabetes in Youth (TrenDY) During COVID-19 Across the United States
Authors' conclusion
In youth, the frequency of both T1D and T2D increased during the COVID-19 pandemic but was significant only for T2D. When controlled for yearly trends, only the frequency of T2D increased significantly in the first year of the pandemic, suggesting that the pandemic environment differentially impacted rates of T1D and T2D in youth.
Study context
- Population
- Youth with new-onset T1D and T2D, March 1, 2018–February 28, 2022, 23 clinical centers in the US
- Exposure
- First 2 years of COVID-19 pandemic vs 2 preceding years
- Outcome
- New diagnosis of youth-onset T1D or T2D and acuity at diagnosis
Methodological detailsmulticentre
- Multicentre
Main finding
As reported in the abstract
- T1D diagnosed, prepandemic
- 4851
- T1D diagnosed, pandemic
- 5955
- Increase in T1D (nonsignificant)
- 22.8%
- T2D diagnosed, prepandemic
- 1610
- T2D diagnosed, pandemic
- 3443
- Increase in T2D
- 114%
- Increase in T2D frequency attributable to pandemic, year (Yr) 2 to Yr 3 (P < .01)
- 76.8%
- Increase in T2D, Yr 3 to Yr 4
- not significant
Observational data: associations, not effects.
Further findings
DKA at T1D diagnosis
P < 0.01
Original publication
Trends of Diabetes in Youth (TrenDY) During COVID-19 Across the United States. J Clin Endocrinol Metab. Published 14 July 2025. doi:10.
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