Table 2.

Rate ratios and 95% CIs of endometrial cancer according to quartiles of total physical activity among 33,723 women in the Swedish Mammography Cohort

Total physical activity (MET/h/d)Q1, <38.9Q2, 38.9-42.2Q3, 42.2-45.9Q4, ≥45.9Ptrend
No. cases75394342
Person-years75,63854,80455,95858,149
Age-adjusted RR (95% CI)*1.00 (reference)0.77 (0.52-1.14)0.81 (0.55-1.18)0.74 (0.50-1.09)0.14
Multivariate RR (95% CI)1.00 (reference)0.78 (0.53-1.16)0.83 (0.56-1.21)0.73 (0.49-1.08)0.13
Multivariate RR (95% CI)1.00 (reference)0.80 (0.54-1.18)0.87 (0.59-1.28)0.79 (0.53-1.17)0.27
  • * Rate ratios from Cox proportional hazards models adjusted for age in months.

  • Rate ratios from Cox proportional hazards models adjusted for age in months, parity (0, 1-2, 3+), history of diabetes (yes/no), total fruit and vegetable (intake in quartiles <239 g, 239-344 g, 345-482 g, 483+ g), and education.

  • Additionally adjusted for BMI [<20, 20-25, 26-30, 30+ (kg/m)].