Table 3.
Risk of inflammatory bowel disease according to being physically active
| Indicator variables of physical activity | Crude | Adjusteda | ||
|---|---|---|---|---|
| HRb | 95% CI | HRb | 95% CI | |
| MET hours/week | ||||
| Active (> 3 MET hours/week) | 0.77 | (0.11; 5.49) | 0.89 | (0.13; 6.27) |
| Active (> 0 h/week) in each activity | ||||
| Walking | 1.02 | (0.73; 1.44) | 1.07 | (0.76; 1.52) |
| Housework | 1.03 | (0.72; 1.47) | 1.04 | (0.72; 1.50) |
| Gardening | 0.87 | (0.72; 1.05) | 0.97 | (0.79; 1.19) |
| Do-it-yourself work | 0.87 | (0.73; 1.03) | 0.92 | (0.75; 1.14) |
| Cycling | 0.87 | (0.73; 1.04) | 0.93 | (0.77; 1.12) |
| Sports | 0.92 | (0.78; 1.09) | 1.02 | (0.85; 1.22) |
aAdjusted for age, gender, occupational physical activity, smoking, energy intake, intake of meat, fibre, fermented dairy products and alcohol, nonsteroidal anti-inflammatory drugs, hormone replacement therapy, comorbidity. The six types of activity were mutually adjusted
bInactive is the reference for all estimates
Abbreviations: MET metabolic equivalent of task, HR hazard ratio, CI confidence interval