Table 6 Results of multivariate Cox regression model of disease free survival
Covariates | Coefficient | Standard error | P-value | Hazard ratio | 95% Cl |
|---|---|---|---|---|---|
Age | 0.015 | 0.045 | 0.737 | 1.015 | 0.930–1.108 |
Gender (0: Male, 1: Female) | -13.419 | 1112.087 | 0.990 | 0.000 | 0.000 |
Tumor size | -0.731 | 0.353 | 0.380 | 0.481 | 0.241–1.961 |
Approach (0: VATS, 1: Thoracotomy) | 1.989 | 0.878 | 0.023 | 7.311 | 1.309–40.827 |
Stage (0: II, 1: III) | 4.886 | 1.657 | 0.003 | 132.403 | 5.141–3405.902 |
Pathological subtype | 0.156 | ||||
Squamous cell ca | Ref | ||||
Adeno ca | 0.268 | 0.679 | 0.693 | 1.308 | 0.346–4.950 |
Large cell ca | 2.583 | 0.679 | 0.054 | 13.234 | 0.959–182.552 |
Time interval between surgery and adjuvant therapy | 0.009 | 0.023 | 0.681 | 1.009 | 0.965–1.055 |
Overall number of nodal stations dissected | -0.008 | 0.405 | 0.985 | 0.993 | 0.449–2.195 |
Nodal status | 0.075 | ||||
N0 | Ref | ||||
N1 | -3.591 | 1.579 | 0.023 | 0.028 | 0.001–0.609 |
N2 | -16.790 | 596.799 | 0.978 | 0.000 | 0.000 |