Table 6. Characteristics of patients with lung cancer (LC, n = 468), chronic obstructive pulmonary disease (COPD, n = 149) and controls (n = 524).
| Variable | LC | COPD | Controls | ||
|---|---|---|---|---|---|
| n (%) | n (%) | n (%) | |||
| Age | ≤60 | 148 (32) | 40 (27) | 374 (70) | |
| >60 | 320 (68) | 109 (73) | 150 (30) | ||
| Gender | Male | 325 (69) | 107 (72) | 379 (72) | |
| Female | 143 (31) | 42 (28) | 145 (28) | ||
| Smoking status | Yes | 442 (94) | 146 (98) | all | |
| No | 22 (5) | 3 (2) | — | ||
| Passive | 4 (1) | 3 (2) | — | ||
| Current | 438 (94) | 31 (21) | 151 (29) | ||
| Former | 30 (6) | 118 (79) | 373 (71) | ||
| Pack-years of smoking | ≤30 | 87 (19) | 46 (31) | — | |
| >30 | 355 (76) | 103 (69) | — | ||
| Family history | Yes | 146 (31) | — | — | |
| No | 245 (53) | — | — | ||
| No information | 77 (16) | — | — | ||
| Other | LC Histology | COPD Severity1 | |||
| NSCLC | 456 (97) | II | 37 (25) | ||
| Sq. c. carcinoma | 208 (46) | III | 69 (46) | ||
| Adenocarcinoma | 185 (41) | IV | 43 (29) | ||
| other | 62 (13) | ||||
| SCLC | 12 (3) | ||||
| TNM Staging2 | |||||
| I | 162 (36) | ||||
| II | 154 (34) | ||||
| III | 120 (26) | ||||
| IV | 18 (4) |
NSCLC—non-small cell lung cancer; SCLC—small cell lung cancer; “–”—no information.
1Severity of COPD was classified according to GOLD standard: II—moderate, III—severe, IV—very severe.
2Information available for 454 participants.