Table 1.

Age standardized baseline characteristics of 33,723 women in the Swedish Mammography Cohort according to quartiles of total physical activity

Total physical activity (MET/h/d)Q1, <38.9 (median, 37.1)Q2, 38.9-42.2 (median, 40.5)Q3, 42.2-45.9 (median, 44.2)Q4, ≥45.9 (median, 48.1)
Variables
    Age (y)62.660.460.861.1
    BMI (kg/m2)25.424.924.824.8
    Age at menarche (y)13.213.213.213.2
    No. children2.12.12.22.2
    Oral contraceptive use (%)58.059.256.153.2
    Age at menopause (y)49.850.050.050.0
    Postmenopausal hormone therapy (%)51.752.151.248.8
    Total energy intake (kcal)1656171317321798
    Education ≥12 years (%)14.917.116.312.3
    History of diabetes (%)4.93.33.73.8
    Total fruit and vegetable intake (g/d)359387391410
  • NOTE: All values other than for age have been directly standardized according to the age distribution of the cohort.