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Table 3 Multivariable logistic regression analysis

From: Outcome prediction in chronic unilateral lumbar radiculopathy: prospective cohort study

Predictors Successful outcome ODI Successful outcome VAS leg pain Successful outcome VAS back pain
Absolute value at follow-up ≤20, adjusted for its baseline value Absolute value at follow-up ≤17.5, adjusted for its baseline value Absolute value at follow-up ≤22.5, adjusted for its baseline value
Univariable Multivariable Univariable Multivariable Univariable Multivariable
Age (year) 0.95 (0.90–1.00)* 0.94 (0.88–0.99)* 0.98 (0.94–1.02)   0.95 (0.91–0.99)* 0.93 (0.89–0.98)*
Male gender 0.63 (0.23–1.77)   0.84 (0.37–1.95)   0.82 (0.35–1.91)  
Current smoker 1.26 (0.44–3.55)   1.06 (0.45–2.48)   1.20 (0.51–2.81)  
University or college education 5.90 (0.72–48.60)**   4.24 (1.23–14.63)* 5.77 (1.46–22.87)* 2.64 (0.84–8.26)**  
Working full-time 2.10 (0.67–6.56)   2.61 (1.07–6.34)* 2.70 (1.02–7.18)* 1.75 (0.74–4.12)** 2.77 (1.02–7.56)*
Leg pain duration (4wk) 0.97 (0.93–1.01)**   0.95 (0.89–1.01)**   0.98 (0.93–1.03)  
Straight leg raising <60° 1.03 (0.38–2.77)   0.97 (0.43–2.19)   1.41 (0.61–3.23)  
Muscle weakness (yes) 0.72 (0.20–2.41)   3.32 (1.12–9.81)* 4.11 (1.24–13.61)* 1.70 (0.58–4.97)  
Dermatomal sensory loss (yes) 1.22 (0.41–3.69)   1.02 (0.42–2.48)   0.79 (0.32–1.96)  
Reflex impairment (yes) 0.50 (0.18–1.40)**   0.40 (0.17–0.92)* 0.39 (0.15–0.97)* 0.90 (0.93–2.07)  
Body mass index (kg/m2) 0.92 (0.81–1.04)**   1.04 (0.93–1.17)   1.04 (0.92–1.17)  
Concordance between nerve root impingement on MRI and clinical radiculopathy 0.63 (0.23–1.77)   1.04 (0.46–2.37)   0.93 (0.40–2.16)  
Modic type I and I/II (yes) 0.35 (0.12–1.05)**   0.68 (0.30–1.56)   0.72 (0.31–1.66)  
FABQW ≥34 at baseline 0.27 (0.09–0.85)* 0.16 (0.04–0.61)* 0.38 (0.13–1.07)**   0.34 (0.11–1.07)**  
FABQPA ≥15 at baseline 0.38 (0.14–1.07)**   0.44 (0.19–1.03)**   0.33 (0.14–0.81)* 0.31 (0.11–0.85)*
  1. Odds ratio for successful outcome on ODI and VAS leg and back pain. 95% confidence interval in brackets.
  2. *P < 0.05; **P < 0.20; wk = week.