Table 4.
Comparison of the median kitchen risk score and sleeping-area risk score among subjects with asthma-like symptoms and asthma and those without such symptoms in winter and summer
| Asthma-like symptoms and asthma | Winter (n = 1207) | Summer (n = 610) | ||
|---|---|---|---|---|
| Median score for kitchen risk factor (25th, 75th percentiles) | Median score for sleeping- area risk factor (25th, 75th percentiles) | Median score for kitchen risk factors (25th,75th percentiles) | Median score for sleeping area risk factors (25th,75th percentiles) | |
| Subjects with asthma-like symptoms and asthma | 6.0 (5.0–8.0) | 3.0 (1.0–5.0) | 3.5 (2.0–7.0) | 2.0 (0.75–4.25) |
| Subjects without asthma-like symptoms and asthma (n = 1049) | 6.0 (4.0–7.0) | 2.0 (1.0–4.0) | 2.0 (1.0–5.0) | 2.0 (1.0–3.0) |
| Z value | −4.481a | −4.007a | −3.06a | −1.46a |
| p value | < 0.001*** | < 0.001*** | 0.002** | 0.144 |
aNonparametric test (Mann–Whitney U test), α = 0.05; *significant at p < 0.05, **significant at p < 0.01, *** significant at p < 0.001