Table 2.

Exercise in adolescence, adulthood, and in mutually exclusive life periods in relation to endometrial cancer risk, the Shanghai Endometrial Cancer Study (1997-2001)

Cases/controls*All women, OR (95% CI)Premenopausal, OR (95% CI)Postmenopausal, OR (95% CI)
Adolescence (MET-h/d/y)
    None679/6661.001.001.00
    0.1-0.957/461.17 (0.76-1.80)1.24 (0.67-2.31)1.00 (0.53-1.89)
    1.0-1.720/460.39 (0.22-0.68)0.50 (0.20-1.24)0.35 (0.17-0.74)
    1.8-3.543/410.89 (0.56-1.44)0.91 (0.46-1.82)0.85 (0.43-1.69)
    3.6-17.633/470.63 (0.39-1.04)0.37 (0.17-0.77)1.17 (0.57-2.38)
Ptrend0.020.020.42
Adult (MET-h/d/y)
    None579/5591.001.001.00
    0.1-0.559/830.67 (0.46-0.97)0.75 (0.36-1.54)0.62 (0.40-0.98)
    0.6-1.273/670.93 (0.64-1.36)1.32 (0.58-2.96)0.85 (0.55-1.31)
    1.3-2.667/690.86 (0.58-1.26)0.81 (0.35-1.85)0.86 (0.56-1.34)
    2.7-11.354/690.76 (0.50-1.13)0.75 (0.32-1.75)0.77 (0.48-1.22)
Ptrend0.120.540.19
Total (MET-h/d/y)
    None479/4501.001.001.00
    0.1-0.7100/1050.84 (0.60-1.16)1.22 (0.68-2.19)0.67 (0.45-1.00)
    0.8-1.8101/1010.89 (0.64-1.24)0.98 (0.55-1.78)0.83 (0.56-1.24)
    1.9-3.484/940.74 (0.53-1.05)0.78 (0.43-1.40)0.73 (0.48-1.13)
    3.5-19.168/960.60 (0.42-0.86)0.45 (0.25-0.83)0.69 (0.44-1.10)
Ptrend<0.010.020.06
Mutually exclusive life periods
    Never479/4501.001.001.00
    Adolescent-only100/1090.79 (0.57-1.10)0.81 (0.52-1.27)0.76 (0.45-1.27)
    Adult-only200/2160.81 (0.63-1.05)0.99 (0.59-1.68)0.76 (0.56-1.02)
    Adolescent + adult53/700.63 (0.42-0.95)0.57 (0.28-1.17)0.69 (0.41-1.14)
Ptrend0.010.230.03
  • Abbreviation: 95% CI, 95% confidence interval.

  • * n values for all cases and controls.

  • Adjusted for age, age at menarche, menopausal status and age, number of pregnancies, oral contraceptive use, current smoking, ever drinking, family history of cancer, education, height, and body mass index.