Characteristics | Total study populationb |
---|---|
Age, years | 30.7 (3.07) |
Education, total years | 16.1 (3.02) |
Body compositionc | |
 BMI, kg/m2 | 24.4 (3.77) |
 Waist, cm | 79.5 (9.80) |
 Tissue fat, %e | 34.2 (7.62) |
 Birth weight, g | 3389 (561) |
Reproductive factors | |
 Parity, No children | 0.91 (1.13) |
 Time since last birth among parous, years | 4.72 (3.07) |
 Age at menarche, years | 13.1 (1.36) |
 Cycle length, days | 28.2 (3.17) |
 Follicular phase length, days | 14.9 (1.73) |
 Luteal phase length, days | 13.45 (1.73) |
Salivary hormonesd | |
 Overall average 17β-estradiol, pmol/l | 17.9 (8.79) |
 Overall average progesterone, pmol/l | 130.2 (68.3) |
Serum hormonese | |
 Estradiol, pmol/l | 146.7 (61.6) |
 Progesterone, nmol/l | 4.83 (6.29) |
Lifestyle factors | |
 Previous use of oral contraceptives, % | 82.7 |
 Leisure time, MET h/week | 57.6 (88.6) |
 Alcohol intake, units per week | 2.89 (3.38) |
 Current smokers, % | 22.1 |
Mammogramsf | |
 Percent mammographic density, % | 29.8 (19.0) |
 Absolute mammographic density, cm2 | 34.7 (23.4) |