Table 2

Geometric mean hormone levelsa (ng/ml) for breast cancer cases and controls

Cases (n = 194)Controls (n = 374)
Mean95% CIMean95% CI
Estone12.512.0–13.112.411.9–12.9
Estradiol22.821.5–24.122.821.8–23.9
Estriol8.88.0–9.68.37.7–8.9
Progesterone175.4167.4–183.8180.4174.9–186.1
  • a Hormone levels adjusted for timing of blood draw