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Respiratory viral infection group comparisons
| Groups | Odds ratio (95% CI) | Relative risk (95% CI) | p value |
|---|---|---|---|
| Exacerbated vs stable | 4.4 (1.8–10.8) | 3.1 (1.6–6.2) | 0.0002 |
| Stable vs NOSa | 0.9 (0.2–7.2) | 0.9 (0.2–4.0) | 0.93 |
Non-obstructed smokers (NOS), patients who have smoked but who have normal spirometry.
