Table 3.
Conditional multiple logistic regressions for all patients with chronic obstructive pulmonary disease (COPD) in the warming-up season, with odds ratio (ORs) and 95% confidence intervals (CIs) for relative humidity (RH), atmospheric pressure (AP), ambient temperature (TX), along with single air pollutants.
| Warming-up season | Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | Model 6 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | |
| RH | 1.06(0.98–1.15) | 0.133 | 1.07(0.98–1.16) | 0.127 | 1.06(0.98–1.15) | 0.123 | 1.07(0.99–1.16) | 0.090 | 1.06(0.98–1.15) | 0.116 | 1.2(1.09–1.33) | <0.001 |
| AP | 0.84(0.74–0.96) | 0.012 | 0.85(0.75–0.97) | 0.015 | 0.85(0.75–0.97) | 0.015 | 0.85(0.74–0.97) | 0.014 | 0.83(0.73–0.96) | 0.010 | 0.90(0.78–1.03) | 0.134 |
| TX | 2.37(1.73–3.25) | <0.001 | 2.05(1.56–2.69) | <0.001 | 2.15(1.62–2.85) | <0.001 | 2.27(1.68–3.06) | <0.001 | 1.96(1.53–2.53) | <0.001 | 3.18(2.11–4.77) | <0.001 |
| CO | 1.05(1.01–1.10) | 0.024 | ||||||||||
| PM10 | 1.01(0.98–1.04) | 0.452 | ||||||||||
| PM2.5 | 1.03(0.99–1.07) | 0.183 | ||||||||||
| NO2 | 1.14(1.00–1.30) | 0.044 | ||||||||||
| SO2 | 1.31(0.80–2.15) | 0.288 | ||||||||||
| O3 | 1.15(1.08–1.22) | <0.001 | ||||||||||