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Table 1 Characteristics of participants by race-ethnicity, Third National Health and Nutrition Examination Survey (NHANES III)

From: Race-ethnic differences in the association of genetic loci with HbA1c levels and mortality in U.S. adults: the 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

HbA 1c (%) (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/m 2 )

    

>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

  1. 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.
  2. 1. For continuous variables, means were adjusted for age and sex.
  3. 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.