Table 1.
Demographics of lung cancer patients and control.
| Variables | Cases (%) | Controls (%) | p-Value | |
|---|---|---|---|---|
| Age (year) | mean ± S.D. | 58.63 ± 11.16 | 57.46 ± 13.18 | 0.056 |
| Gender | male | 216 (25.4%) | 93 (12.7%) | <0.001 |
| female | 634 (74.6%) | 640 (87.3%) | ||
| Smoking * | never | 565 (66.5%) | 522 (71.2%) | <0.001 |
| yes | 241 (28.3%) | 82 (11.2%) | ||
| packing-years | 35.38 ± 10.81 | 29.41 ± 14.76 | 0.011 | |
| Family history of cancer * | yes | 66 (12.2%) | 61 (13.1%) | 0.688 |
| no | 473 (87.8%) | 405 (86.9%) | ||
| Histology | LAD | 507 (59.6%) | ||
| LSCC | 212 (24.9%) | |||
| SCLC | 106 (12.5%) | |||
| others | 25 (3.0%) | |||
| Clinical stage | Ⅰ | 55 (6.5%) | ||
| Ⅱ | 126 (14.8%) | |||
| Ⅲ | 332 (39.0%) | |||
| Ⅳ | 156 (18.4%) | |||
| unknown | 181 (21.3%) | |||
| Survival time * | M (P25~P75) | 18 (11.0~32.0) | ||
| Status | alive | 54 (14.8%) | ||
| dead | 311 (85.2%) |
LAD, lung adenocarcinoma; LSCC, lung squamous cell carcinoma; SCLC, small cell lung cancer; * There were missing values.