Table 1

Characteristics of participants by race-ethnicity, Third National Health and Nutrition Examination Survey (NHANES III)
Sample weighted distribution by race-ethnicity1
Non-Hispanic White Non-Hispanic Black Mexican American
Characteristics (n = 1231) (n = 901) (n = 909) p-value2
HbA1c(%) (SE) 5.22 (0.015) 5.36 (0.022) 5.30 (0.016) <.0001
Age (years)
  Mean (SE) 43.7 (0.52) 39.6 (0.52) 35.6 (0.45) <.0001
Sex
  Male, % (95% CI) 48.6 (45.1–52.2) 44.1 (40.6–47.7) 53.3 (49.6–57.0)
  Female, % (95% CI) 51.4 (47.9–54.9) 55.9 (52.3–59.4) 46.7 (43.0–50.4) 0.2713
BMI (kg/m2)
>25 (95% CI) 45.1 (41.6–48.6) 33.4 (30.0–36.7) 32.4 (28.9–35.9)
25 to >30 (95% CI) 34.3 (30.9–37.8) 36.3 (32.8–39.7) 41.6 (37.9–45.3)
> 30 (95% CI) 20.6 (17.9–23.4) 30.4 (27.2–33.6) 26.1 (22.7–29.4) <.0001

CI = confidence interval; Std Dev: standard deviation; SE: standard error; BMI: Body Mass Index; NHW: non-Hispanic white; NHB: Non-Hispanic black; MA: Mexican American.

1. For continuous variables, means were adjusted for age and sex.

2. p-values were tests for the difference across race-ethnicity based on Satterthwaite adjusted-F statistics for continuous variables and X2 for categorical variables.

Grimsby et al.

Grimsby et al. BMC Medical Genetics 2012 13:30   doi:10.1186/1471-2350-13-30

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