Table 3.
Stage distribution by group and adjusted mortality
| Stage | Group A | Group B |
|---|---|---|
| I | 14 (48%) | 6 (14%) |
| II | 8 (28%) | 8 (19%) |
| III | 3 (10%) | 17 (39%) |
| IV | 4 (14%) | 12 (28%) |
| Variables | Unadjusted
|
Adjusted
|
||
|---|---|---|---|---|
| HR (95% CI) | P-value | HR (95% CI) | P-value | |
| COPD | 1.16 (0.60–2.21) | 0.660 | 1.87 (0.91–3.85) | 0.087 |
| Stage II | 1.51 (0.54–4.24) | 0.435 | ||
| Stage III | 2.32 (0.87–6.16) | 0.091 | ||
| Stage IV | 5.21 (1.90–14.2) | 0.001 | ||
Note: Group A, patients with lung cancer and pre-existing COPD; Group B, patients with lung cancer and COPD who were diagnosed of both simultaneously.
Abbreviations: HR, hazard ratio; CI, confidence interval.