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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