Table 1 Characteristics of study population of US women, Third National Health and Nutrition Examination Survey, Phase 2 (1991-1994)

N = 3,409

Age

17-40

45.6 (1.8)

41-59

30.2 (1.6)

60+

24.2 (2.2)

Race/Ethnicity

   Non-Hispanic white

81.3 (1.8)

   Non-Hispanic black

13.2 (1.7)

   Mexican American

5.6 (0.8)

Educational attainment

   < 12 yrs

22.1 (1.6)

   12 yrs

37.5 (1.4)

   College or above

40.4 (2.4)

BMI (kg/m²)

   < 25

48.1 (1.9)

   25-29.9

25.4 (0.8)

   ≥ 30

26.5 (1.4)

Smoking status

   Current smoker

25.7 (1.5)

   Former smoker

18.7 (1.4)

   Never smoker

55.6 (1.8)

Drinking status

   Lifetime abstainer

17.9 (1.7)

   Former drinker

38.8 (1.3)

   Current drinker

43.3 (2.2)

Total dietary fiber intake

   ≥ 7 gm/1000 kcal

59.8 (1.9)

   < 7 gm/1000 kcal

40.2 (1.9)

Total energy intake

   ≥ 1600 kcal

56.4 (1.4)

   < 1600 kcal

43.6 (1.4)

Physical activity

   None

22.7 (2.1)

   Low

35.3 (1.1)

   High

42.0 (1.9)

Menopausal status

   Yes

40.7 (2.2)

   No

59.3 (2.2)

Aspirin use

   None

68.0 (1.2)

   < 1 day/month

30.1 (1.1)

   ≥ 1 day/month

1.8 (0.4)

Female hormone use

   Yes

16.0 (1.4)

   No

84.0 (1.4)

Serum C-reactive protein (mg/dL)^a

0.33 (0.31,0.35)

Plasma fibrinogen (g/L)^a

3.00 (2.95, 3.06)

Serum homocysteine (umol/L)^a

8.17 (8.01, 8.33)

Serum uric acid (umol/L)^a

270 (265, 276)