Table 2.
Baseline characteristics according to high or low RES in lobe with cancer
| Characteristic | Cancer in a lobe with lower RES (N = 298) |
Cancer in a lobe with higher RES (N = 159) |
P value |
|---|---|---|---|
| COPD | 75 (25.2) | 88 (55.3) | < 0.001 |
| DLCO (< 80) | 87 (29.9) | 73 (49.3) | < 0.001 |
| Smoking | < 0.001 | ||
| Never | 137 (46.0) | 27 (17.0) | |
| Ever | 161 (54.0) | 132 (83.0) | |
| Pathologic stage | 0.347 | ||
| I | 188 (64.2) | 93 (59.6) | |
| II | 56 (19.1) | 39 (25.0) | |
| III | 49 (16.7) | 24 (15.4) | |
| Differentiation | < 0.001 | ||
| Well + Moderate | 270 (90.6) | 123 (77.4) | |
| Poorly | 28 (9.4) | 36 (22.6) | |
| Pleura invasion | 68 (22.8) | 54 (34.0) | 0.028 |
| Lymphatic invasion | 89 (30.2) | 52 (32.9) | 0.548 |
| Vascular invasion | 40 (13.6) | 35 (22.2) | 0.019 |
Data are presented as number (%)
Abbreviations: COPD chronic obstructive pulmonary disease, DLCO diffusing capacity of lung for carbon monoxide, RES regional emphysema score