Table 1

Characteristics of participants in the validation sample and in the Adventist Health Study-2 (AHS-2).

AHS-2

(n = 95,681)

Validation Sample

(n = 911)

p value

Adjusted p value for race1


Women (%)

65.0

66.7

0.28

0.98

Age (years)(SD)

58.6 (14.5)

58.3 (13.4)

0.58

0.02

Self-reported weight (kg) (SD)

76.7 (19.0)

77.8 (18.2)

0.09

0.98

Self-reported height (m) (SD)

168.2 (0.1)

167.9 (0.1)

0.46

0.54

Body Mass Index (BMI)

0.12

0.93

Self-reported Overweight (%) (BMI

34.4

34.5

≥25 kg/m2 and BMI<30 kg/m2)

Self-reported Obesity (%)

24.7

27.3

(BMI ≥30 kg/m2)

Ever smokers (%)

20.0

17.9

0.11

0.09

Marital status

Married/Remarried (%)

70.9

71.6

0.66

0.002

Education

0.41

0.46

≤High School

22.5

21.4

≤2-year college

39.5

41.7

≤Doctoral degree

38.0

36.9

Income per capita2

0.87

0.31

Low (%)

26.4

25.9

Medium (%)

46.1

47.1

High (%)

27.5

27.0

Race

<0.001

NA

White (%)

65.2

46.9

Black (%)

26.6

46.4

Hispanic (%)

3.9

3.7

Asian (%)

3.1

1.9

Other (%)

1.2

1.1

Physical activity3

0.74

0.25

Low (%)

17.6

17.5

Medium (%)

30.8

31.9

High (%)

51.7

50.6

Soy consumers4 (%)

72.9

76.7

0.02

0.004

Nuts consumption

0.28

0.43

≤1/week (%)

30.0

30.4

2 to 4/week (%)

29.0

31.0

≥5/week (%)

41.0

38.6

Diet5

0.25

0.40

Non-vegetarian (%)

41.4

43.9

Semi-vegetarian (%)

20.4

20.3

Vegetarian (%)

38.2

35.8


SD: Standard Deviation; NA: Not applicable.

Continuous variables are expressed as means and (standard deviation) and compare using a T-Student test. Categorical variables are expressed as percentages and compare using Chi-square test.

1) p value was obtained through multivariate linear regression for continuous variables and logistic regression for categorical variables.

2) Low: <10,000$, medium: ≥10,000 - <30,000$, High: ≥30,000$.

3) Low: <20 minutes of non-vigorous activity; medium: ≥20 minutes of non-vigorous activity; high: ≥20 minutes of vigorous activity.

4) Soy consumers: ≥1 g of soy protein consumption per day.

5) Semi-vegetarian: low meat consumption and pesco; Vegetarian: Vegan and Lactovegetarian.

Bes-Rastrollo et al. BMC Public Health 2011 11:213   doi:10.1186/1471-2458-11-213

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