Table 2 Univariate analysis for predictors of overall survival in patients with ESCC
Variable | Hazard Ratio | 95% Confidence Interval | P value |
|---|---|---|---|
Age (>60 vs. ≤ 60) | 0.834 | 0.512–1.357 | 0.834 |
Gender (male vs. female) | 1.183 | 0.727–1.924 | 0.499 |
Site of tumor (upper vs. middle vs. lower) | 1.310 | 0.916–1.872 | 0.139 |
Differenciation (well vs. moderate vs. poor) | 1.084 | 0.799–1.470 | 0.604 |
Tumor class (T1 vs. T2 vs. T3 vs. T4) | 2.763 | 1.632–4.854 | 0.008 |
Lymph node status (No vs. N1) | 2.978 | 1.541–3.647 | 0.010 |
Stage (I vs. II vs. III vs. IV) | 3.037 | 1.451–4.860 | <0.001 |
Plasma big ET-1 levels (normal vs. elevated) | 2.494 | 1.302–3.806 | 0.002 |