Table 1.
Baseline characteristics of 30,112 women from the Swedish Mammography Cohort, 1997, by leisure-time activity
| Leisure-time activity | ||||
|---|---|---|---|---|
| Low | Intermediate | High | ||
| Walking | Walking | Walking | Walking | |
| <20 minutes/day | <20 minutes/day | ≥20 minutes/day | ≥20 minutes/day a | |
| Exercise | Exercise | Exercise | Exercise | |
| <1 hour/week | ≥1 hour/week | <1 hour/week | ≥1 hour/week a | |
| Cases | 32 | 37 | 14 | 118 |
| Cohort | 3,400 | 5,369 | 2,370 | 18,973 |
| Age (years) | 61.6 (9.4) | 61.3 (9.0) | 59.8 (8.7) | 61.3 (8.7) |
| Years of education (>12 years, %) | 15.8 | 19.9 | 23.4 | 19.8 |
| Body mass index (kg/m2) | 26.2 (4.67) | 25.5 (4.11) | 24.9 (3.89) | 24.7 (3.60) |
| Current smokers (%) | 30.7 | 23.5 | 27.6 | 20.0 |
| Alcohol drinkers (%) | 77.9 | 83.5 | 84.0 | 85.0 |
Data presented as number, mean (standard deviation) or percentage. aMedian of walking/bicycling in the category ≥20 was 40 to 60 minutes per day; median of exercise in the category ≥1 was 2 to 3 hours per week.