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Incidence and prevalence of type 1 diabetes (T1DM) in the U.S. (SEARCH for Diabetes in Youth Study Group)
- In the SEARCH for Diabetes in Youth Study, incidence of T1DM highest among youth aged 10-14 years (25.9 per 100,000 person years) and lowest among youth aged 15-19 years (13.1 per 100,000 person years) in 2002-2003.
- Incidence rate similar by gender (incidence rate ratio ~1).
- Overall, highest incidence rates of T1DM observed in non-Hispanic white youth across all age groups (15.1 - 32.9 per 100,000 person years).
- Incidence rate for T1DM grown by ~2% in the state of Colorado over 26 years from 1978-88 to 2002-04, with significant increases in both non-Hispanic and Hispanic youth
- Prevalence of T1DM ~0.15% in U.S. (2001).
- Prevalence of T1DM was lower for youth aged 0 - 9 years (0.78 cases per 1000 youth) compared to those 10 - 19 years (2.28 cases per 1000 youth)
- By 18 years of age, prevalence of T1DM ~1:300
- Across all ages, non-Hispanic whites had the highest prevalence of T1DM (1.03 and 2.88 cases per 1000 youth in younger and older youth, respectively).
- Among youth < 10 years at diagnosis, T1DM most common (>85%) regardless of race/ethnicity. Among youth >10 years at diagnosis, T1DM most common in non-Hispanic white adolescents (85.1%) compared to minority youth including Hispanic (53.9%), African American (42.2%), Asian/Pacific Islander (30.3%), and American Indian (13.8%) for whom T2DM relatively more common.