Table 2.
Survival associated with preexisting COPD among elderly patients with NSCLC
| Group | Total | Dead | Alive censored | Percent | Median |
|---|---|---|---|---|---|
| Alive | (Days) | ||||
| Stage I NSCLC | |||||
| Non-COPD | 7,184 | 3,726 | 3,458 | 48.13 | 1,130 |
| COPD | 4,835 | 3,220 | 1,615 | 33.4 | 692 |
| Emphysema | 766 | 473 | 293 | 38.25 | 811 |
| Chronic bronchitis | 2,402 | 1,640 | 762 | 31.72 | 672 |
| Stage II NSCLC | |||||
| Non-COPD | 2,282 | 1,701 | 581 | 25.46 | 627 |
| COPD | 1,123 | 916 | 207 | 18.43 | 473 |
| Emphysema | 171 | 125 | 46 | 26.9 | 582 |
| Chronic bronchitis | 539 | 446 | 93 | 17.25 | 445 |
| Stage III NSCLC | |||||
| Non-COPD | 10,097 | 9,029 | 1,068 | 10.58 | 255 |
| COPD | 5,315 | 4,889 | 426 | 8.02 | 224 |
| Emphysema | 789 | 719 | 70 | 8.87 | 229 |
| Chronic bronchitis | 2,717 | 2,522 | 195 | 7.18 | 222 |
| Stage IV NSCLC | |||||
| Non-COPD | 19,675 | 19,134 | 541 | 2.75 | 112 |
| COPD | 8,176 | 8,003 | 173 | 2.12 | 106 |
| Emphysema | 1,398 | 1,365 | 33 | 2.36 | 110 |
| Chronic bronchitis | 4,116 | 4,041 | 75 | 1.82 | 105 |
Abbreviation: NSCLC, non-small-cell lung cancer