Variables | Oxygen therapy HR (95% CI) | p |
---|---|---|
Exposed vs not exposeda | 0.63 (0.28–1.40) | 0.3 |
Mean pack/year, 10-unit increase | 1.17 (0.98–1.39) | 0.09 |
FEV1, L 1-unit increase | 0.38 (0.17–0.85) | 0.020 |
GAP score, 1-level increase | 1.89 (1.30–2.76) | 0.001 |
CPI score, 1-level increase | 1.07 (1.02–1.12) | 0.008 |