Table 4 Risk of mortality within 3 years* estimated by Cox proportional hazard ratio model

Age:

43

 < 65 years

299

ref.

 ≥ 65 years

242

1.037 (0.773–1.391)

0.809

Sex:

42

 Male

249

1.043 (0.777–1.399)

0.78

 Female

293

ref.

Neoadjuvant chemo:

164

 Yes

127

1.376 (0.978–1.934)

0.067

1.815 (1.059–3.110)

 No

293

ref.

Any complication :

48

 Yes

311

1.663 (1.205–2.295)

0,002

 No

225

ref.

Severe complication :

33

 Yes

72

2.112 (1.373–3.249)

< 0.001

2.390 (1.385–4.127)

 No

225

ref.

 Not in analysis (CD 1-3a)

254

Duration of surgery:

60

 < 480 min

267

ref.

 ≥ 480 min

257

1.313 (0.975–1.769)

0.073

0.652 (0.382–1.113)

Postop leukopenia:

40

 Yes

47

0.877 (0.508–1.514)

0.638

 No

497

ref.

Severe leukopenia:

38

 Yes

27

1.678 (0.934–3.015)

0.083

1.357 (0.448–4.111)

 No

497

ref.

 Not in analysis (mild leukopenia)

22

PCI-score:

45

 0–8

265

ref.

ref.

 9–15

159

2.084 (1.464–2.965)

< 0.001

2.318 (1.239–4.335)

 > 15

115

2.632 (1.822–3.801)

< 0.001

2.598 (1.313–5.141)

pN-stage:

66

 N0

107

ref.

ref.

 N1

181

1.902 (1.118–3.234)

0.018

0.915 (0.392–2.138)

 N2

227

2.991 (1.809–4.944)

< 0.001

1.844 (0.866–3.927)

 Nx

3

Period of surgery:

40

 2019–2021

201

ref.

ref.

 2016–2018

213

1.546 (1.070–2.234)

0.02

1.487 (0.748–2.954)

 2013–2015

109

1.541 (1.008–2.355)

0.046

1.019 (0.467–2.226)

 ≤ 2012

21

1.425 (0.669–3.034)

0.358

0.842 (0.210–3.368)