Table 1.

Descriptive characteristics by usual physical activity levels in 2,082 postmenopausal women ages 55-81 y not on HRT in EPIC-Norfolk Study (1997-2000)

Quartiles of usual physical activity
P for association
No.1 (<18.5 MET h/wk)2 (18.5 to <43.9 MET h/wk)3 (43.9 to <86.8 MET h/wk)4 (>86.8 MET h/wk)
Mean (SD)
Age (y)2,08269.0 (6.4)66.9 (6.2)64.1 (6.3)61.7 (6.2)<0.001
BMI (kg/m2)2,08227.1 (4.5)26.6 (4.0)26.2 (3.9)26.7 (4.8)0.003
Alcohol consumption (units)2,0823.96 (5.30)4.38 (5.00)5.06 (6.25)4.08 (5.10)0.011
Age at menopause (y)2,07749.8 (6.4)49.9 (5.8)50.0 (4.0)49.6 (5.4)0.84
No. (%)
Smoking status2,061
    Current61 (7.1)46 (6.7)26 (7.1)21 (13.2)0.16
    Former279 (32.7)218 (31.9)124 (34.1)45 (28.3)
    Never514 (60.2)420 (61.4)214 (58.8)93 (58.5)
Age at menarche (y)1,985
    <13303 (37.0)234 (35.5)140 (39.8)66 (42.3)0.32
    ≥13515 (63.0)425 (64.5)212 (60.2)90 (57.7)
Age at first birth (y)1,751
    <2038 (5.3)25 (4.2)19 (6.1)10 (7.5)0.02
    20 to <30568 (79.3)474 (80.2)267 (85.9)109 (82.0)
    ≥30110 (15.4)92 (15.6)25 (8.0)14 (10.5)
Parity2,089
    0149 (17.2)96 (14.0)53 (14.5)28 (17.3)0.34
    1-2463 (53.4)356 (51.8)194 (53.2)88 (54.3)
    ≥3255 (29.4)235 (34.2)118 (32.3)46 (28.4)
Past oral contraceptive use1,955
    Ever187 (23.0)196 (30.3)146 (42.3)63 (41.7)<0.001
    Never625 (77.0)451 (69.7)199 (57.7)88 (58.3)
Past HRT use2,080
    Ever116 (13.4)121 (17.6)82 (22.5)50 (30.9)<0.001
    Never750 (86.6)566 (82.4)283 (77.5)112 (69.1)