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Incidence and prevalence of type 1 diabetes (T1DM) in the U.S. (SEARCH for Diabetes in Youth Study Group)
- Between 2002 and 2009 there was an increase in the incidence of T1DM, from 24.4/100,000 in 2002 to 27.4/100,000 in 2009 (annual increase 2.7%). 
- Significant increases in incidence were present in boys and girls, and all age groups except for children aged 0-4 years of age. The incidence was highest among youth aged 5-9 years (38.7 per 100,000 person years) and lowest among youth aged 15-19 years (14.8 per 100,000 person years) in 2009. 
- Prevalence of T1DM has also increased: 0.15% in 2001 to 0.19% in 2009 (30% increase). Significant increases in prevalence were seem among boy and girls, in all age groups, and all race/ethnic groups except for Asian Pacific Islanders and American Indians. 
- In 2009, the prevalence of T1DM was highest among children 15-19 (0.32%) and non-Hispanic Whites (0.25%). The lowest prevalence is observed among very young children aged 0-4 (0.03%) and American Indian (0.04%).