Table 1.

Baseline characteristics of 45,381 women according to MET-hours/wk of vigorous exercise and walking in the BWHS

CharacteristicMET-h/wk
<55-910-1920-39≥40
No. studied10,9848,18810,1178,7827,329
Age, y (mean)42.240.940.739.438.7
BMI, kg/m2 (mean)29.828.928.427.527.0
Education, y (mean)14.614.915.015.115.0
Family history of colorectal cancer (%)5.86.25.95.45.4
Current smoker (%)18.214.614.313.114.8