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Table 4 Univariate and multivariate Cox proportional hazard regressions Model

From: Preoperative palsy score has no significant association with survival in non-small-cell lung cancer patients with spinal metastases who undergo spinal surgery

  Univariate Multivariate
Variable Hazard ratio (95 % CI) p value Hazard ratio (95 % CI) p value
Sex     
 F (ref: M) 0.61 (0.33–1.14) 0.120   
Age (year)     
 55–74 (ref: ≤54) 1.16 (0.6–2.25) 0.659 0.78 (0.37–1.64) 0.512
 ≥75 (ref: ≤54) 3.28 (1.37–7.82) 0.008* 1.22 (0.37–4.05) 0.748
BMI (kg/m2)     
 Eutrophic (ref: underweight) 1.03 (0.39–2.68) 0.958   
 Overweight (ref: underweight) 0.72 (0.25–2.05) 0.538   
Pre-op palsy     
 1 (ref: 0) 1.18 (0.49–2.83) 0.706 1.23 (0.5–3.03) 0.653
Post-op palsy     
 1 (ref: 0) 0.3 (0.06–1.36) 0.119   
 2 (ref: 0) 0.1 (0.02–0.51) 0.006*   
PS score     
 1 (ref: 0) 0.43 (0.18–1.03) 0.059 0.52 (0.16–1.74) 0.289
 2 (ref: 0) 0.09 (0.03–0.26) <0.001* 0.14 (0.03–0.54) 0.004*
Histology     
 Adeno (ref: Non-adeno) 0.38 (0.2–0.71) 0.003* 0.59 (0.28–1.25) 0.167
Number of vertebra involved     
 ≥3 (ref: <3) 0.7 (0.39–1.25) 0.228   
Other bone metastasis     
 With (ref: without) 0.83 (0.46–1.49) 0.531   
Visceral metastasis     
 With (ref: without) 1.08 (0.52–2.23) 0.837   
  1. *Significant at p-value <0.05
  2. PS performance status, CI confidence interval, ref reference, Adeno adenocarcinoma, Non-adeno non-adenocarcinoma, BMI body mass index