Table III.
Univariate analysis of the prognostic factors for survival in patients with extensive-stage small-cell lung cancer.
| Characteristic | Mean survival (months) | 2-year OS, % | 5-year OS, % | χ2 | P-value |
|---|---|---|---|---|---|
| Gender | 0.052 | 0.820 | |||
| Male | 15 | 31.3 | 2.2 | ||
| Female | 14 | 30.8 | 3.8 | ||
| Age, years | 2.590 | 0.108 | |||
| <60 | 18 | 34.2 | 3.8 | ||
| ≥60 | 14 | 26.7 | 1 | ||
| KPS score | 0.056 | 0.813 | |||
| ≥80 | 16 | 32.3 | 1.6 | ||
| <80 | 12 | 27.3 | |||
| Smoking status | 2.127 | 0.145 | |||
| Yes | 15 | 26.5 | 0 | ||
| No | 15 | 34.9 | 4.8 | ||
| No. of ChT cycles | 10.527 | 0.001 | |||
| <4 | 10 | 16.7 | 0 | ||
| ≥4 | 17 | 34.1 | 3.1 | ||
| Treatment | 4.534 | 0.033 | |||
| ChT/TRT | 18 | 35.3 | 2.4 | ||
| ChT alone | 12 | 14.5 | 2.4 | ||
| No. of metastatic organs | 2.435 | 0.119 | |||
| 1 | 17 | 32.4 | 2.7 | ||
| ≥2 | 12 | 25.9 | 1.9 |
OS, overall survival; KPS, Karnofsky performance status; ChT, chemotherapy; ChT/TRT, chemotherapy combined with thoracic radiation therapy.