Table 1 Baseline characteristics of the study population
Variables | Classes | Control group (n = 12671) | Lung cancer group | |||
|---|---|---|---|---|---|---|
All (n = 7681) | Lung adenocarcinoma group | Lung squamous cell carcinomas group | Small cell lung cancer group | |||
Gender, n (%) | Female | 4685 (37.0%) | 2545 (33.1%) | 2242 (49.6%) | 179 (7.8%) | 98 (13.5%) |
Male | 7986 (63.0%) | 5136 (66.8%) | 2278 (50.3%) | 2107 (92.1%) | 627 (86.4%) | |
Age years, X ± S | 58.05 ± 17.58 | 62.50 ± 10.25 | 60.63 ± 10.83 | 65.81 ± 9.25 | 64.42 ± 9.12 | |
Smoking, n (%) | Yes | 4270 (33.7%) | 3491 (47.1%) | 1372 (31.6%) | 1570 (71.0%) | 455 (64.6%) |
No | 8401 (66.3%) | 3916 (52.8%) | 2976 (68.3%) | 640 (28.9%) | 249 (35.3%) | |
Drinking, n (%) | Yes | 2395 (18.9%) | 1780 (24.0%) | 830 (19.1%) | 709 (32.1%) | 201 (28.6%) |
No | 10276 (81.1%) | 5629 (76.0%) | 3520 (80.9%) | 1501 (67.9%) | 503 (71.3%) | |