Table 4.
Survival analysis with stratification of the variables in optimal upper and lower binary cut-off limits by the Kaplan–Meier method and the differences by means of the log-rank test
| Overall survival (months) |
||||
|---|---|---|---|---|
| Variables | Mean | Standard error | Chi-square (log rank) | P value |
| Age (yrs) | ||||
| ≤67 | 48.64 | 4.6 | ||
| >67 | 37.19 | 5.3 | 2.98 | 0.08 |
| Gender | ||||
| Women | 41.42 | 5.3 | ||
| Men | 44.51 | 4.8 | 0.03 | 0.8 |
| Stage | ||||
| Ia | 63 | 0.15 | ||
| Ib | 66 | 0.6 | 16.24 | 0.006 |
| IIa | 70 | 0.5 | ||
| IIb | 51 | 0.14 | ||
| IIIA | 8 | 0.7 | ||
| IIIB | ||||
| T stage | ||||
| T1 | 42.77 | 9.02 | ||
| T2 | 46.24 | 4.51 | 8.85 | 0.03 |
| T3 | 28.00 | 11.90 | ||
| T4 | 10.00 | 1.10 | ||
| N metastasis | ||||
| N0 | 49.47 | 4.67 | ||
| N1 | 44.05 | 8.24 | 10.96 | 0.004 |
| N2 | 17.00 | 7.74 | ||
| Mediastinal metastasis | ||||
| N = 0 | 48.68 | 4.22 | ||
| N = 1 | 13.00 | 12.00 | 14.49 | 0.002 |
| N = 2 | 1.000 | 0.00 | ||
| N = 3 | 25.00 | 13.11 | ||
| Id-1 | ||||
| ≤497 | 35.09 | 4.72 | 1.28 | 0.04 |
| >497 | 46.38 | 4.93 | ||
| Id-2 | ||||
| ≤578 | 33.16 | 4.51 | ||
| >578 | 48.16 | 4.70 | 2.89 | 0.08 |
| Id-3 | ||||
| ≤590 | 35.31 | 4.75 | ||
| >590 | 47.12 | 4.85 | 1.61 | 0.04 |
| MVD-VEGF | ||||
| ≤55 | 41.17 | 4.90 | ||
| >55 | 44.79 | 4.80 | 0.18 | 0.06 |
| MVD-CD34 | ||||
| ≤24.3 | 34.67 | 4.58 | 2.27 | 0.05 |
| >24.3 | 48.44 | 4.61 | ||