Results of the multivariate analysis on the main determinants of the FEV1 decline, including as independent variables only those variables significantly related to the FEV1 decline in the univariate analysis
| Variables | Odd ratios | 95% CI | p Value | |
|---|---|---|---|---|
| Lower | Upper | |||
| Persistent exposure vs reduction | 12.7 | 1.8 | 90.8 | 0.01 |
| Sputum eosinophilia ≥3% | 7.6 | 1.1 | 52.9 | 0.04 |
| Baseline FEV1 (% of predicted) | 1.06 | 0.99 | 1.13 | 0.06 |
FEV1, forced expiratory volume in the first second.