TABLE 1

Baseline characteristics of nondiabetic women according to randomized groups in the WAFACS

CharacteristicsnFolic acid and B vitamins
P value
Active (n = 2,132)Placebo (n = 2,120)
Age (years)4,25263.1 ± 8.962.9 ± 8.90.42
    45–5489320.421.7
    55–641,52637.134.7
    ≥651,83342.643.6
BMI (kg/m2)4,25229.7 ± 6.429.8 ± 6.30.56
    <251,07826.624.1
    25 to <301,27629.230.8
    ≥301,89844.145.1
Smoking status0.64
    Current51912.012.5
    Past1,84643.043.9
    Never1,88745.143.7
Alcohol use0.33
    Never/rarely2,10248.650.3
    At least one drink/month56513.812.7
    1–6 drinks/week1,15628.026.4
    Daily4299.6210.6
Physical activity (kcal/week)4,2521,270 ± 1,7681,209 ± 1,7000.25
    ≤1,0002,68162.563.6
    >1,0001,57137.536.4
Menopause and hormone therapy use0.58
    Premenopausal2695.866.79
    Uncertain912.252.03
    Postmenopausal, current hormone therapy use2,22152.851.7
    Postmenopausal with no hormone therapy use1,67139.139.5
Family history of diabetes0.99
    Yes1,45035.735.6
    No2,61864.464.4
Baseline dietary intake
    Folic acid (mg)4,053492 ± 243494 ± 2400.60
    Vitamin B6 (mg)4,0534.93 ± 15.35.19 ± 16.00.94
    Vitamin B12 (mcg)4,0538.81 ± 8.758.83 ± 8.440.82
  • Data are means ± SD unless otherwise indicated.