Table 1.

PMD, mean soy intake, and prevalence of daily green tea drinkers in study participants by selected characteristics

All subjects
Mean soy isoflavones* (mg/d)% Daily green tea drinker
n = 3,315Mean (95% CI) PMD (%)
Age (y)
    506931.8 (27.9-35.7)19.311.6
    51-551,18024.7 (23.7-23.6)18.711.6
    56-601,16020.4 (19.5-21.4)18.19.9
    61-6580617.6 (16.5-18.8)17.510.4
    ≥6610015.6 (12.4-18.9)18.28.0
    Ptrend0.00010.150.617
Education
    No formal education1,40420.5 (19.6-21.4)17.58.1
    Primary school1,35521.8 (20.9-22.6)18.312.6
    Secondary school45422.3 (20.7-23.9)19.312.6
    A level/university10223.4 (20.2-26.6)21.09.8
    Ptrend0.0120.005<0.001
BMI (kg/m2)
    <2037931.9 (30.3-33.5)18.65.0
    20 to <241,22723.3 (22.4-24.2)17.89.1
    24 to <281,17418.7 (17.8-19.6)18.213.0
    >2853515.3 (13.9-16.7)18.712.7
    Ptrend0.00010.54<0.001
Parity
    021334.0 (31.8-36.3)17.311.7
    1-273727.3 (26.0-28.5)17.811.3
    3-41,38520.3 (19.5-21.2)17.911.8
    ≥598015.6 (14.5-16.7)19.08.3
    Ptrend0.00010.090.041
Menopausal status
Premenopausal32028.0 (26.1-30.0)17.013.8
Postmenopausal2,99520.6 (20.0-21.2)18.310.3
    Ptrend0.00010.150.056
  • * Adjusted for age at mammography (if applicable), BMI at mammography (kg/m2; if applicable), education (no formal education, primary school, secondary school, A level/university; if applicable), parity (0,1-2, 3-4, ≥5; if applicable), and menopausal status (pre, post; if applicable), and total calories.

  • From χ2 test. Of 3,315 subjects, 352 were daily green tea drinkers.

  • Adjusted for age at mammography (if applicable), BMI at mammography (kg/m2; if applicable), education (no formal education, primary school, secondary school, A level/university; if applicable), parity (0, 1-2, 3-4, ≥5; if applicable), and menopausal status (pre, post; if applicable).