Table 1.
Basic data of study subjects
| Variables | Case (n=551) | Control (n=543) | P |
|---|---|---|---|
|
| |||
| Mann–Whitney U-test | 0.640 | ||
| Age (mean±SD) | 57.99±11.509 | 56.69±15.659 | 0.117 |
| <57, n (%) | 232 (42.1) | 243 (44.8) | 0.377 |
| >57, n (%) | 319 (57.9) | 300 (55.2) | |
| Sex, n (%) | |||
| Male | 192 (34.8) | 165 (30.4) | 0.127 |
| Female | 359 (65.2) | 378 (69.6) | |
| Smoking, n (%) | |||
| No | 386 (70.1) | 432 (79.6) | <0.001* |
| Yes | 165 (29.9) | 111 (20.4) | |
| Pathological type | |||
| Adenocarcinoma, n (%) | 304 (53.5) | ||
| Squamous lung cancer, n (%) | 131 (20.5) | ||
| Large cell lung cancer, n (%) | 7 (11.7) | ||
| Small cell lung cancer, n (%) | 109 (14.3) | ||
Note: More smokers were statistically significant in cases than in controls.
*
Indicates statistical significance (P<0.05).