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Table 4 Statistical analysis of the VAS and Karnofsky results before and after the surgical treatment

From: "Quality of life of patients after surgical treatment of cervical spine metastases"

Approach VAS before the surgery VAS after the surgery P value Karnof’sky before the surgery Karnof’sky after the surgery P value
(A) Anterior N = 16 5.2 ± 1.7 2.1 ± 1.1 <0.05 70 ± 14 80 ± 12 <0.05
(P) Posterior N = 30 7.9 ± 1.4* 4.6 ± 1.2* <0.05 48 ± 11* 58 ± 10* <0.05
(H) Hybrid N = 11 8.5 ± 1.8 6.1 ± 1.5 <0.05 46 ± 18 56 ± 17 NS
  1. Results are presented as a mean ± standard deviation. *p < 0.05 for inter-group difference A vs. B or A vs. C