Table 4.
Cox regression analysis for overall survival, with correction for year of treatment and age as continuous variables
| Hazard ratio | 95% Confidence interval |
|||
|---|---|---|---|---|
| Lower | Upper | P value | ||
| Neoadjuvant therapy | ||||
| NCS | 1.00 | 0.66 | 1.11 | 0.232 |
| NCRS | 0.86 | |||
| Age | 1.01 | 1.00 | 1.02 | 0.195 |
| Gender | ||||
| Male | 1.00 | 0.62 | 1.21 | 0.402 |
| Female | 0.87 | |||
| ASA | 0.013 | |||
| I | 1.00 | 0.70 | 1.56 | 0.839 |
| II | 1.04 | 1.01 | 2.53 | 0.045 |
| III and IV | 1.60 | |||
| cT stage | 0.038 | |||
| 1 | 1.00 | 0.21 | 1.05 | 0.065 |
| 2 | 0.47 | 0.39 | 1.64 | 0.541 |
| 3 and 4 | 0.80 | |||
| cN stage | ||||
| cN0 | 1.00 | 1.17 | 2.05 | 0.002 |
| cNpositive | 1.55 | |||
| Year of surgery | 0.98 | 0.93 | 1.02 | 0.306 |
NCRS, neoadjuvant chemoradiotherapy and surgery; NCS, neoadjuvant chemotherapy and surgery.