Table 2.
Univariate logistic regression results for the association between secondary attack rate before admission and meteorological factors and air pollution; People's Republic of China, 2003.
| Risk factor | OR | 95% CI | P-value |
|---|---|---|---|
| Daily average temperature (DAT) | 0.71 | 0.60, 0.86 | <0.001 |
| Daily average air pressure (DAAP) | 0.57 | 0.50, 0.65 | <0.001 |
| Daily average relative humidity (DARH) | 0.60 | 0.50, 0.71 | <0.001 |
| Daily average wind velocity (DAWV) | 0.91 | 0.77, 1.07 | 0.267 |
| Daily hours of sunshine (DHS) | 1.38 | 1.15, 1.64 | <0.001 |
| Air pollution index (API) | 0.99 | 0.85, 1.17 | 0.949 |
OR, odds ratio; CI, confidence interval.