Table 1.
Patient characteristics.
| N | Age, years, median (IQR) | Male % |
Smoking habitsa, N (%) |
|||||
|---|---|---|---|---|---|---|---|---|
| NA | No | Low | Moderate | Heavy | ||||
| Total | ||||||||
| Cancer cohort | 148 | 67 (59–72) | 81.8 | 9 (6.1) | 0 | 8 (5.4) | 32 (21.6) | 99 (66.9) |
| Control cohort | 1381 | 53 (46–68) | 66.8 | 8 (0.6) | 1128 (81.7) | 115 (8.3) | 119 (8.6) | 11 (0.8) |
| All patients | ||||||||
| LC | 67 | 64 (57–71) | 76.1 | 6 (9.0) | 0 | 5 (7.5) | 16 (23.9) | 40 (59.7) |
| LC + COPD | 81 | 69 (62–75) | 86.4 | 3 (3.7) | 0 | 3 (3.7) | 16 (19.8) | 59 (72.8) |
| COPD | 11 | 66 (58–71) | 72.7 | 3 (27.3) | 0 | 2 (18.2) | 1 (9.1) | 5 (45.5) |
| No LC diagnosis | 22 | 59 (54–72) | 77.3 | 5 (22.7) | 0 | 4 (18.2) | 7 (31.8) | 6 (27.3) |
| Healthy | 1345 | 53 (46–68) | 66.6 | 0 | 1128 (83.9) | 107 (8.0) | 110 (8.2) | 0 |
| Patients aged 55–75 | ||||||||
| LC | 44 | 65 (60–70) | 77.3 | 3 (6.8) | 0 | 4 (9.1) | 8 (18.2) | 29 (65.9) |
| LC + COPD | 62 | 65 (58–71) | 85.5 | 1 (1.6) | 0 | 1 (1.6) | 10 (16.1) | 50 (80.6) |
| COPD | 10 | 66.5 (60–70) | 70.0 | 3 (30.0) | 0 | 1 (10.0) | 1 (10.0) | 5 (50.0) |
| No LC diagnosis | 9 | 58 (56–61) | 77.7 | 2 (22.2) | 0 | 2 (22.2) | 3 (33.3) | 2 (22.2) |
| Healthy | 434 | 64 (58–70) | 60.1 | 0 | 362 (83.4) | 33 (7.6) | 39 (9.0) | 0 |
Abbreviations: COPD, chronic obstructive pulmonary disease; IQR, interquartile range; LC, lung cancer; NA, not available; SD, standard deviation.
a
No = never smoke; low = ≤20 cigarette packs/year; moderate = 20–40 packs/year; heavy = ≥40 packs/year.