Table 2 Values are hazard ration (HR) [95% confidential intervals]. Stage IV patients were excluded from analysis of disease-free survival

Age

1.06 (1.03–1.09, p < 0.001)

1.03 (0.99–1.07, p = 0.137)

1.02 (0.99–1.06, p = 0.211)

Sex, female

0.79 (0.43–1.44, p = 0.444)

0.67 (0.27–1.64, p = 0.376)

0.69 (0.32–1.52, p = 0.360)

BMI

0.88 (0.80–0.96, p = 0.006)

0.88 (0.77–1.00, p = 0.046)

0.88 (0.78–0.98, p = 0.025)

CCI

1.36 (1.20–1.53, p < 0.001)

1.23 (1.01–1.50, p = 0.039)

1.31 (1.12–1.53, p = 0.001)

 2 vs 1

0.45 (0.10–1.97, p = 0.291)

0.95 (0.13–7.14, p = 0.957)

0.73 (0.09–5.57, p = 0.758)

 3 vs 1

1.21 (0.29–5.07, p = 0.796)

1.43 (0.19–10.93, p = 0.731)

1.22 (0.16–9.22, p = 0.850)

SMI, yes

3.15 (1.76–5.65, p < 0.001)

2.25 (0.93–5.45, p = 0.073)

2.99 (1.43–6.23, p = 0.004)

VO, yes

1.02 (0.54–1.94, p = 0.947)

1.97 (0.84–4.61, p = 0.118)

0.85 (0.36–1.98, p = 0.703)

IMFAR, yes

1.28 (0.69–2.40, p = 0.435)

0.71 (0.26–1.92, p = 0.495)

0.78 (0.32–1.92, p = 0.590)

SO, yes

0.72 (0.36–1.46, p = 0.367)

1.36 (0.55–3.33, p = 0.506)

0.31 (0.09–1.02, p = 0.054)

SATI, yes

0.78 (0.38–1.61, p = 0.503)

1.31 (0.51–3.35, p = 0.575)

0.52 (0.18–1.51, p = 0.231)

VATI, yes

0.36 (0.15–0.86, p = 0.021)

0.74 (0.27–2.01, p = 0.560)

0.18 (0.04–0.77, p = 0.021)

Laparoscopy, yes

0.49 (0.07–3.62, p = 0.485)

0.11 (0.01–0.89, p = 0.039)

0.36 (0.05–2.67, p = 0.315)

Severe complication, yes

0.84 (0.32–2.18, p = 0.717)

0.16 (0.02–1.24, p = 0.079)

0.85 (0.26–2.77, p = 0.792)

 Middle vs high

1.28 (0.67–2.46, p = 0.454)

0.67 (0.23–1.93, p = 0.461)

1.18 (0.50–2.75, p = 0.710)

 Low vs high

1.37 (0.63–2.98, p = 0.434)

1.64 (0.57–4.72, p = 0.362)

1.46 (0.56–3.85, p = 0.441)

 II vs I

1.63 (0.68–3.94, p = 0.277)

1.23 (0.33–4.58, p = 0.759)

3.00 (0.61–14.87, p = 0.179)

 III vs I

1.68 (0.72–3.93, p = 0.232)

2.88 (0.94–8.84, p = 0.064)

5.53 (1.25–24.51, p = 0.024)

 IV vs I

4.32 (1.65–11.27, p = 0.003)

–

14.96 (3.16–70.84, p = 0.001)

 R1 vs R0

4.97 (2.27–10.87, p < 0.001)

–

7.96 (3.27–19.39, p < 0.001)

Adjuvant chemotherapy, yes

1.19 (0.66–2.17, p = 0.563)

2.36 (0.92–6.04, p = 0.072)

2.62 (1.11–6.19, p = 0.028)