Table 4.
Results of univariate analysis of model selection feature.
| Feature | Negative (n = 3,693) | Positive (n = 1,168) | t/χ2 value | p-value |
|---|---|---|---|---|
| Age(year) | 33.87 ± 8.43 | 43.32 ± 9.16 | 32.691 | <0.001 |
| Smoking or frequent passive smoking | 320.600 | <0.001 | ||
| Yes | 1,469(39.78) | 815(69.78) | ||
| No | 2,224(60.22) | 353(30.22) | ||
| Significant psychological stress in the past year | 29.163 | <0.001 | ||
| Yes | 775(20.99) | 327(28.66) | ||
| No | 2,918(79.01) | 814(71.34) | ||
| Occupational exposure (presence of air pollution in the work environment) | 209.891 | <0.001 | ||
| Yes | 443(12.0) | 350(29.97) | ||
| No | 3,250(88.0) | 818(70.03) | ||
| Presence of chronic lung disease | 41.936 | <0.001 | ||
| Yes | 187(5.06) | 121(10.36) | ||
| No | 3,506(94.94) | 1,047(89.64) | ||
| Family history of lung cancer | 136.618 | <0.001 | ||
| Yes | 517(14.0) | 338(28.94) | ||
| No | 3,176(86.0) | 830(71.06) | ||
| Albumin (g/L) | 49.14 ± 11.23 | 44.92 ± 9.33 | 11.635 | <0.001 |
| Elevated levels of carcinoembryonic antigen | 40.807 | <0.001 | ||
| Yes | 61(1.65) | 58(4.97) | ||
| No | 3,632(98.35) | 1,110(95.03) |