Table 1 Baseline characteristics of 52,938 participants by level of total daily physical activitya
Baseline characteristics | Overall (N = 52,938) | Physical activity | |||
|---|---|---|---|---|---|
Q1 | Q2 | Q3 | Q4 | ||
Age, year | 52.1 ± 10.3 | 58.5 ± 10.4 | 52.0 ± 10.3 | 49.1 ± 9.0 | 48.6 ± 8.4 |
Female, % | 58.0 | 62.4 | 65.0 | 56.2 | 48.4 |
Middle school and above, % | 37.8 | 29.5 | 40.8 | 41.9 | 38.9 |
Married, % | 92.7 | 87.6 | 92.8 | 94.9 | 95.6 |
Alcohol intake, % | |||||
 Never regular drinker | 58.8 | 66.0 | 62.5 | 55.9 | 50.6 |
 Former regular drinker | 2.1 | 3.6 | 1.4 | 1.5 | 1.8 |
 Occasional drinker: < once/week | 21.7 | 17.5 | 21.5 | 23.8 | 23.8 |
 Regular drinker: ≥ once/week | 17.5 | 12.8 | 14.5 | 18.8 | 23.9 |
Smoking status, % | |||||
 Never regular smoker | 60.8 | 65.8 | 67.3 | 58.6 | 51.4 |
 Former regular smoker | 5.5 | 7.9 | 4.4 | 4.7 | 5.3 |
 Occasional smoker | 4.7 | 3.7 | 4.4 | 5.1 | 5.7 |
 Regular smoker | 28.9 | 22.6 | 23.9 | 31.6 | 37.7 |
Fresh fruit consumption, % | |||||
 Daily | 17.7 | 19.1 | 20.4 | 17.5 | 13.7 |
 4–6 days per week | 11.1 | 10.1 | 12.8 | 11.0 | 10.3 |
 1–3 days per week | 35.0 | 32.1 | 34.8 | 36.5 | 36.6 |
 Monthly | 31.5 | 31.7 | 28.4 | 30.7 | 35.1 |
 Never/rarely | 4.8 | 6.9 | 3.6 | 4.3 | 4.3 |
Red meat consumption, % | |||||
 4–7 days per week | 44.7 | 33.1 | 44.0 | 49.0 | 52.7 |
 1–3 days per week | 47.8 | 55.2 | 48.5 | 45.1 | 42.2 |
 Monthly/never/rarely | 7.6 | 11.7 | 7.5 | 5.9 | 5.1 |
BMI, kg/m2 | 24.0 ± 3.2 | 24.1 ± 3.4 | 24.1 ± 3.2 | 24.0 ± 3.1 | 23.9 ± 3.0 |
Family history of cancer, %b | 25.1 | 26.1 | 24.6 | 24.6 | 25.1 |