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Table 3 Survival analysis at 6, 12 months, and overall

From: Comparison of outcomes between total en bloc spondylectomy and palliative spinal surgery in metastatic spinal tumor patients: propensity score matching analysis

 

Palliative

TES

Survival at 6 months

22

22

Time at risk: person-months

156.9

289.83

Incidence rate per 100 (95%CI)

8.92 (5.28–15.07)

1.73 (0.72–4.14)

Mean survival time (95%CI), months

14.85 (7.84–21.85)

34.59 (26.90–42.28)

Survival probability

  

At 2 mo. (95%CI)

63.64% (40.29–79.88)

86.12% (62.86–95.31)

At 4 mo. (95%CI)

45.45% (24.44–64.33)

76.56% (52.49–89.52)

At 6 mo. (95%CI)

36.36% (17.43–55.67)

76.56% (52.49–89.52)

Survival at 12 months

  

Time at risk: person-months

156.9

289.83

Incidence rate per 100 (95%CI)

9.56 (5.76–15.86)

2.42 (1.15–5.07)

Mean survival time (95%CI), months

13.53 (6.80–20.26)

30.92 (22.57–39.28)

Survival probability

  

At 3 mo. (95%CI)

54.55% (32.07–72.39)

77.27% (53.74–89.85)

At 6 mo. (95%CI)

36.36% (17.43–55.67)

72.73% (49.10–86.71)

At 9 mo. (95%CI)

31.82% (14.18–51.11)

67.13% (42.90–82.89)

At 12 mo. (95%CI)

31.82% (14.18–51.11)

67.13% (42.90–82.89)

Overall Survival

  

Time at risk: person-months

156.9

289.83

Incidence rate per 100 (95%CI)

11.47 (7.23–18.21)

5.52 (3.38–9.01)

Median survival time (95%CI), months

3.13 (0.64–5.62)

9.97 (6.14–13.80)

Survival probability

  

At 5 mo. (95%CI)

40.91% (20.85–60.07)

72.73% (49.10–86.71)

At 10 mo. (95%CI)

27.27% (11.12–46.37)

50.00% (28.18–68.43)

At 15 mo. (95%CI)

16.36% (4.39–35.06)

40.91% (20.85–60.07)

At 20 mo. (95%CI)

16.36% (4.39–35.06)

36.36% (17.43–55.67)

At 25 mo. (95%CI)

16.36% (4.39–35.06)

29.09% (11.23–49.79)

At 30 mo. (95%CI)

16.36% (4.39–35.06)

14.55% (1.33–42.29)

At 35 mo. (95%CI)

16.36% (4.39–35.06)

14.55% (1.33–42.29)

At 40 mo. (95%CI)

-

14.55% (1.33–42.29)