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 |
BMI: Body mass index
aLevel of total physical activity was divided into four groups by quartiles, with Q1 as the lowest quartile group. Baseline characteristics were presented as the mean (SD) or percentage
bBased on self-reported cancer in father, mother or siblings