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Table 4 Association between the predictor variables and self-reported non-recovery at 12 months after the injury. All predictor variables were measured at baseline. Odds ratios and 95% confidence intervals (CIs)

From: COMT genotype and non-recovery after a whiplash injury in a Northern European population

Predictor variable Level Non-recovered/total (n/n) % Odds ratio (CI)
Crude
Odds ratio (CI)
Adjusteda
Gender Male 23/54 42.6 1.0 (Reference)  
Female 33/74 44.6 1.1 (0.5–2.2) 1.2 (0.5–3.0)
Age <24 6/13 46.2 1.0 (Reference)  
25–65 49/110 44.5 0.9 (0.3–3.0) 0.7 (0.2–2.7)
>66 1/5 20.0 0.3 (0.02–3.4) 0.1 (0.0–1.4)
VAS pain after accident <24 7/35 20.0 1.0 (Reference)  
25–65 13/37 35.1 2.2 (0.7–6.3) 2.8 (0.9–8.8)
>65 36/56 64.3 7.2 (2.7–19.4) 10.4 (3.0–36.6)
Anxiety (HAD) No 35/93 37.6 1.0 (Reference)  
Yes 16/22 72.7 4.4 (1.6–12.4) 3.5 (1.1–11.6)
Haplotype LPS 8/19 42.1 1.0 (Reference)  
APS 43/98 43.9 1.1(0.4–2.9) 0.8 (0.2–2.5)
HPS 5/11 45.5 1.2 (2.3–5.1) 0.9 (0.2–5.6)
Treatment No 39/91 42.9 1.0 (Reference)  
Yes 15/32 46.9 1.2 (0.5–2-6) 0.4 (0.1–1.2)
  1. aBased on 115 patients in the multivariate regression