Table 5.
Multivariate analysis of the rate of new diagnoses of COPD
| RR | 95% CI | P-value | |
|---|---|---|---|
| Prefecture | <0.001 | ||
| Central Greece | 1 | ||
| Thrace | 0.973 | (0.390, 2.427) | 0.954 |
| Peloponnese | 1.167 | (0.687, 1.984) | 0.567 |
| Crete | 0.286 | (0.154, 0.534) | <0.001 |
| Macedonia | 0.578 | (0.362, 0.924) | 0.022 |
| Thessaly | 0.307 | (0.139, 0.678) | 0.003 |
| Aegean Islands | 0.576 | (0.212, 1.568) | 0.281 |
| Ionian Islands | 5.526 | (0.642, 47.569) | 0.120 |
| Epirus | 0.68 | (0.146, 3.174) | 0.624 |
| Hospital | |||
| No | 1 | ||
| Yes | 0.296 | (0.194, 0.450) | <0.001 |
| Warmer months (April–September) | |||
| No | 1 | ||
| Yes | 0.815 | (0.769, 0.864) | <0.001 |
Notes: Results from the mixed-effects Poisson model.
Abbreviations: CI, confidence interval; COPD, chronic obstructive pulmonary disease; RR, rate ratios.