Table 3

Multivariate ORs and 95% CIs for physical activity according to joint tumor ER/PR status, in the studies of premenopausal and postmenopausal women, conducted in Los Angeles County, California

Average MET-hours/week from menarche to reference ageControlsER+/PR+ER+/PR−ER−/PR−ER unknown/PR unknown
CasesOR(95% CI)CasesOR(95% CI)CasesOR(95% CI)CasesOR(95% CI)
Postmenopausala
05122271.00851.00651.002091.00
0.1–17.54941980.92(0.73–1.16)670.80(0.56–1.13)570.88(0.60–1.29)1740.82(0.65–1.05)
≥17.685250.69(0.42–1.13)70.43(0.19–0.98)50.43(0.17–1.11)170.50(0.28–0.87)
Trend P0.160.030.120.01
Premenopausalb
0147521.00111.00401.00771.00
0.1–17.5273870.85(0.57–1.28)211.10(0.51–2.37)510.71(0.44–1.14)970.69(0.47–1.00)
≥17.6102220.60(0.34–1.07)70.94(0.34–2.56)140.46(0.24–0.92)340.61(0.37–1.02)
Trend P0.090.940.020.03
  • a Models include age at reference year, socioeconomic status, number of full-term pregnancies, months of breastfeeding, age at menopause, hormone replacement therapy, family history, alcohol consumption, and BMI.

  • b Models include age at reference year, socioeconomic status, age at menarche, age at first full-term pregnancy, number of full-term pregnancies, months of breastfeeding, family history, and BMI.