Table 2 Kaplan-Meier survival curve estimates for analysis of prognostic factors for survival

Age, year

0.010*

 ≤54

16

9.5 (3.22–11.07)

 55–74

24

8.7 (3.09–13.14)

 ≥75

10

3.7 (2.0–5.52)

Sex

0.220

 M

34

6.3 (3.09–9.13)

 F

16

11.1 (5.52–13.86)

Tumor histology

0.003*

 Adenocarcinoma

32

9.9 (7.43–11.20)

 Non-adenocarcinoma

18

3.5 (2.20–5.39)

Pre-op palsy score

0.870

 0 (Frankel 1, 2)

8

2.5 (1.22–16.03)

 1 (Frankel 3, 4)

42

8.0 (5.52–9.89)

Post-op palsy score

<0.001*

 0 (Frankel 1, 2)

2

2.4 (2.4–2.4)^b

 1 (Frankel 3, 4)

32

5.5 (2.92–7.33)

 2 (Frankel 5)

16

14.3 (9.23–17.02)

Pre-op PS

<0.001*

 Poor (0, PS 10–40 %)

8

2.4 (0.46–3.78)

 Moderate (1, PS 50–70 %)

20

3.7 (2.4–6.3)

 Good (2, PS 80–100 %)

22

13.1 (9.23–16.03)

BMI

0.540

 Underweight (1)

5

6.3 (0.59–12.02)

 Eutrophic (2)

31

6.0 (3.18–8.91)

 Overweight/obese (3)

14

9.1 (7.62–10.65)

0.630

 <3

24

6.3 (3.15–9.46)

 ≥3

26

9.1 (3.16–15.11)

Other bone metastasis

0.818

 Without

20

5.4 (1.25–9.46)

 With

30

8.7 (6.56–10.85)

Visceral metastasis

0.567

 Without

40

8.0 (5.53–10.51)

 With

10

3.2 (0–7.65)