Table 2

Adjusteda geometric mean levels of serum E1, E2, and androstenedione (pg/ml) by body size, select menstrual and reproductive variables, and cigarette smoking status

VariableNE1E2Androstenedione
BMI (kg/m2)
 <201724.611.5379.1
 20−<249229.913.4436.4
 24+3534.613.5436.9
 2p (linear trend)0.020.340.59
Height (cm)b
 <1523330.614.1472.5
 152−<1608630.013.5395.8
 160+2531.111.2500.3
 2p (linear trend)0.670.010.61
Age at menarche (yrs)b
 ≤122032.112.3472.5
 13–144931.414.0454.3
 15–165731.113.2435.5
 17+1824.612.0316.1
 2p (17+ vs. ≤16)0.020.250.05
Age first live birth (yrs)/parousb
 ≤203530.112.6338.4
 21–255030.613.0463.8
 26–304029.113.0484.3
 31+/nulliparous1933.015.4421.5
 2p (31+/nulliparous vs. ≤30)0.390.030.90
Menarche/parityb
 Menarche <17/31+/nulliparous1735.316.0418.7
 Menarche <17/other10930.913.0453.2
 Menarche 17+1824.612.1316.9
 2p (linear trend)0.020.020.24
Cigarette smokingb
 Never/ex-smoker13630.213.0432.9
 Current smoker831.416.7372.0
 2p0.810.040.56
  • a Adjusted for time interval between blood draw and last meal, and age.

  • b Further adjusted for BMI.