Prevalences in 2005–2006 Diagnosed diabetes. The crude prevalence of diagnosed diabetes in individuals aged20 years was 7.7% (Table 1). Prevalence increased with age and peaked at age 60–74 years (crude 17.6%), falling slightly in older ages. Crude and standardized prevalences were similar in men and women. Crude prevalence was significantly higher in non-Hispanic blacks (12.8%) than in non-Hispanic whites
(6.6%; P 0.0001) and Mexican Americans (8.4%; P 0.008); standardized
prevalences were significantly higher in non-Hispanic blacks (P 0.0001) and
Mexican Americans (P 0.0001) than in non-Hispanic whites.