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Diabetes Care. 2007 Mar;30(3):503-9.

Increasing incidence of type 1 diabetes in 0- to 17-year-old Colorado youth.

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  • 1University of Colorado School of Medicine, Denver, Colorado, USA.

Abstract

OBJECTIVE:

We sought to assess the long-term trends in the incidence of type 1 diabetes among non-Hispanic white and Hispanic youth aged 0-17 years from Colorado using data from the Colorado IDDM Study Registry (1978-1988) and SEARCH for Diabetes in Youth (2002-2004).

RESEARCH DESIGN AND METHODS:

Cases of diabetes were ascertained through physician reporting and hospital databases. Type 1 diabetes was defined as use of insulin within 2 weeks from diagnosis. Completeness of ascertainment was estimated as 97%. Annual average incidence rates (per 100,000/year) and 95% CIs for the time periods were computed. Trends in incidence were assessed by Poisson regression.

RESULTS:

The incidence of type 1 diabetes was 14.8 (95% CI 14.0-15.6) in 1978-1988 and 23.9 (22.2-25.6) in 2002-2004 for the state of Colorado (P < 0.0001). From 1978 to 2004, the incidence of type 1 diabetes increased by 2.3% (1.6-3.1) per year (P < 0.0001). The increase in incidence was significant for both non-Hispanic white (2.7% [95% CI 1.9-3.6] per year, P < 0.0001) and Hispanic youth (1.6% [0.2-3.1] per year, P = 0.013).

CONCLUSIONS:

The incidence of type 1 diabetes has increased 1.6-fold among Colorado youth from 1978-1988 to 2002-2004, and both non-Hispanic white and Hispanic youth are affected by this trend.

PMID:
17327312
[PubMed - indexed for MEDLINE]
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