Table 3.
Smoking status and frequency of leisure-time exercise according to the categorized frequency of common cold
| Variables | Sample (n = 1413) | Frequency of common colda | P-value | |||
|---|---|---|---|---|---|---|
| 0 (n = 271) | 1 (n = 525) | 2 (n = 446) | ≥3 (n = 171) | |||
| Cigarette smoking categories | ||||||
| Non-smokers | 641 | 138(21.5) | 256(39.9) | 178(27.8) | 69(10.8) | – |
| Passive smokers | 476 | 68(14.3) | 163(34.2) | 178(37.4) | 67(14.1) | < 0.001 |
| Past smokers | 82 | 18(22.0) | 30(36.6) | 24(29.3) | 10(12.2) | 0.715 |
| Light current smokers | 113 | 24(21.2) | 42(37.2) | 37(32.7) | 10(8.8) | 0.790 |
| Heavy current smokers | 101 | 23(22.8) | 34(33.7) | 29(28.7) | 15(14.9) | 0.443 |
| Frequency of leisure-time exercise | ||||||
| Low < 4 days/month | 414 | 63(15.2) | 155(37.4) | 132(31.9) | 64(15.5) | – |
| Medium 1–2 days/week | 624 | 110(17.6) | 233(37.3) | 205(32.9) | 76(12.2) | 0.206 |
| High ≥3 days/week | 375 | 98(26.1) | 137(36.5) | 109(29.1) | 31(8.3) | < 0.001 |
aEpisodes of self-reported common cold in the previous year
Values are shown as numbers and proportions for categorical data
P-values were calculated by ordinal logistic regression
Statistical significance: P < 0.05