Variable | OR (95% CI of OR) | P-value |
---|---|---|
Chronic disease | ||
 Yes | 2.54 (1.36–4.72) | 0.003 |
 Nob |  |  |
Doing exercise | ||
 No | 2.16 (1.04–4.46) | 0.038 |
 Yes (often/regular)b |  |  |
Number of on-calls from the hospital per weeka | ||
 6 and above | 2.66 (1.35–5.25) | 0.005 |
 5 and belowb |  |  |