Table I.
Demographic characteristics of non-small cell lung cancer cases and controls.
| Characteristics | Cases, n (%) | Controls, n (%) | P-valuea |
|---|---|---|---|
| Total | 186 | 196 | |
| Age, years | 0.99 | ||
| ≤45 | 90 (48.39) | 95 (48.47) | |
| >45 | 96 (51.61) | 101 (51.53) | |
| Sex | 0.49 | ||
| Male | 136 (73.12) | 137 (69.90) | |
| Female | 50 (26.88) | 59 (30.10) | |
| Cigarette smoking | <0.01 | ||
| No | 54 (29.03) | 115 (58.67) | |
| Yes | 132 (70.97) | 81 (41.33) | |
| Alcohol consumption | 0.95 | ||
| No | 122 (65.59) | 128 (65.31) | |
| Yes | 64 (34.41) | 68 (34.69) | |
| Histology | |||
| Adenocarcinoma | 108 (58.06) | 0 | |
| Squamous cell | 60 (32.26) | 0 | |
| Carcinoma | |||
| Others | 18 (9.68) | 0 | |
aTwo-sided χ2 test.