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Table 2 Multivariate models for predicting histologically confirmed inflammation

From: Clinical features as predictors of histologically confirmed inflammation in patients with lumbar disc herniation with associated radiculopathy

  B (intercept) p-value Exp(B) (odds ratio) Lower 95%CI for Exp(B) Upper 95%CI for Exp(B)
Model 1: (all significant univariate factors included)
 Clinical inflammation score >/=3 2.7 0.05 15.2 1.0 233.6
 Back pain < 5/10 2.2 0.19 9.1 0.3 258.0
 Can sit with a firm backrest > 30 min 0.2 0.90 1.2 0.1 24.3
 Worse the next day after injury 1.2 0.35 3.2 0.3 36.2
 Flexion range of motion 0–30° 1.1 0.37 3.1 0.3 38.2
 MRI - disc extrusion 1.0 0.47 2.7 0.2 40.4
 Intercept −4.9 0.00 0.0   
Model 2: (Final model with only significant predictors remaining)
 Clinical inflammation score >/=3 2.8 0.03 16.5 1.4 195.3
 Back pain < 5/10 3.1 0.01 23.1 2.4 224.6
 Constant −3.1 0.00 0.0   
Model 3: Best balance of model parsimony and performance
 Clinical inflammation score >/=3 2.6 0.04 12.8 1.1 154.7
 Back pain < 5/10 2.8 0.02 16.4 1.6 172.7
 Worse the next day after injury 1.4 0.25 3.9 0.4 39.2
 Flexion range of motion 0–30° 1.4 0.24 4.0 0.4 40.9
 Constant −4.8 0.00 0.0   
  1. B Coefficient for the constant (intercept), Exp(B) Odds ratio, CI Confidence interval for the odds ratio, MRI Magnetic resonance imaging, Constant Constant symptoms