| | Variable | DFS | OS | | Number (%) | Medium (months), HR (95% CI) | value | Number (%) | Medium (months), HR (95% CI) | value |
| | Gender | | | 0.3077 | | | 0.0915 | | Male | 76 (63.9) | 31.6, 1.318 (0.790–2.197) | | 71 (63.4) | 57.3, 1.666 (0.957–2.899) | | | Female | 43 (36.1) | 70.2, 0.759 (0.455–1.266) | | 41 (36.6) | NR, 0.600 (0.345–1.045) | | | Age (years) | | | 0.6729 | | | 0.9895 | | <65 | 95 (79.8) | 35.9, 1.110 (0.688–1.791) | | 89 (79.5) | NR, 1.004 (0.517–1.953) | | | ≥65 | 24 (20.2) | 73.3, 0.901 (0.558–1.453) | | 23 (20.5) | 58.6, 0.996 (0.512–1.935) | | | Smoking status | | | 0.2678 | | | 0.0616 | | Never-smokers | 43 (36.1) | NR, 0.741 (0.445–1.234) | | 39 (34.8) | NR, 0.583 (0.334–1.019) | | | Current smokers | 76 (63.9) | 28.0, 1.349 (0.810–2.247) | | 73 (65.2) | 63, 1.715 (0.982–2.997) | | | TNM stage | | | <0.0001 | | | <0.0001 | | I | 55 (46.2) | NR, 0.444 (0.215–0.918) | | 54 (48.2) | NR, 0.528 (0.239–1.167) | | | II | 28 (23.5) | 23.6, 0.649 (0.360–1.172) | | 26 (23.2) | 37.9, 0.500 (0.260–0.963) | | | III | 36 (30.3) | 11.8, 3.388 (1.798–6.384) | | 32 (28.6) | 20.7, 3.643 (1.815–7.313) | | | T stage | | | 0.1188 | | | 0.0581 | | T1 | 76 (63.9) | NR, 0.672 (0.395–1.142) | | 72 (64.3) | NR, 0.568 (0.317–1.020) | | | T2 | 43 (36.1) | 23.6, 1.489 (0.876–2.531) | | 40 (35.7) | 32.2, 1.759 (0.981–3.157) | | | N stage | | | 0.0004 | | | 0.0001 | | N0 | 60 (50.4) | NR, 0.571 (0.269–1.212) | | 59 (52.7) | NR, 0.808 (0.355–1.837) | | | N1 | 23 (19.3) | 34.3, 0.551 (0.296–1.026) | | 21 (18.7) | NR, 0.395 (0.198–0.790) | | | N2 | 36 (30.3) | 12.1, 2.871 (1.558–5.292) | | 32 (28.6) | 20.7, 3.083 (1.575–6.037) | |
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