Table 1.

Descriptive characteristics among CYP1B1 genotyped cases and controls

CharacteristicsCases/controls (n)CasesControlsP
Age, y689/1,54963.9 ± 6.862.8 ± 6.6<0.0001*
Age at first full term pregnancy, y592/1,39124.6 ± 4.524.8 ± 4.70.44
Age at last birth, y592/1,39129.5 ± 5.130.4 ± 5.3<0.0001
Age at menopause, y601/1,49051.1 ± 4.050.1 ± 4.0<0.0001
Parity (n children)689/1,5491.9 ± 1.22.1 ± 1.3<0.0001
Recent BMI, kg/m2688/1,53227.3 ± 5.325.5 ± 4.3<0.0001
Duration of menopausal hormone use, y
    0489/1,10372.072.2
    <248/1287.18.4
    ≥2142/29620.919.40.46
Ever use of oral contraceptives165/54424.135.4<0.0001
Smoking245/66935.643.20.0007
First-degree family history of endometrial cancer64/719.85.1<0.0001
  • * All analyses were adjusted for age.

  • Recent refers to 1 year prior to data collection.

  • Defined as a lifetime consumption of at least 100 cigarettes or regular smoking for >1 year.