Table 1. The baseline characteristics of patients.
| Characteristics | No. of patients (%) | Death | % | P-value | MST* | Log-rank P-value |
|---|---|---|---|---|---|---|
| Age | ||||||
| < 60 | 248 (54.6) | 213 | 85.9 | 0.991 | 25.72 | 0.293 |
| ≥ 60 | 206 (45.4) | 177 | 85.9 | 23.65 | ||
| Tabaccon exposure | ||||||
| No | 252 (55.5) | 212 | 84.1% | 0.224 | 25.31 | 0.064 |
| Yes | 202 (44.5) | 178 | 88.1% | 22.85 | ||
| Histological type | ||||||
| AD | 237 (52.2) | 196 | 82.7 | 0.101 | 22.20 | < 0.001 |
| SQU | 164 (36.1) | 148 | 90.2 | 23.54 | ||
| Others | 53 (11.7) | 46 | 86.8 | 36.59 | ||
| Clinical stage | ||||||
| I | 95 (20.9) | 65 | 68.4 | < 0.001 | 43.82 | < 0.001 |
| II | 56 (12.2) | 48 | 85.7 | 23.65 | ||
| III | 263 (57.9) | 240 | 91.3 | 17.38 | ||
| IV | 40 (8.8) | 37 | 92.5 | 19.96 | ||
| Chemotherapy | ||||||
| No | 22 (4.8) | 20 | 90.9 | 0.754# | 14.82 | 0.006 |
| Yes | 432 (95.2) | 370 | 85.6 | 25.09 | ||
| Surgery | ||||||
| No | 123 (27.1) | 112 | 91.1 | 0.054 | 20.59 | 0.006 |
| Yes | 331 (72.9) | 278 | 84.0 | 25.42 |
*MST:median survival time, AD:adenocarcinoma, SQU: squamous carcinoma.
#Fisher exact P value.