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Table 3 Associations between the study participants' characteristics and the WOMAC scores (n = 197)

From: Waiting for total knee replacement surgery: factors associated with pain, stiffness, function and quality of life

WOMAC SCORE β 95% CI p value
Pain score (r 2 = 0.11)    
   Contralateral knee pain - 7.65 - 14.56 – - 3.29 0.009*
   Psychological distress - 0.45 - 0.83 – - 0.07 0.020*
   BMI§ - 0.46 - 0.86 – - 0.05 0.026*
Stiffness score (r 2 = 0.11)    
   Contralateral knee pain - 10.07 - 16.60 – - 3.54 0.003*
   Duration of symptoms 0.53 0.18 – 0.87 0.003*
   Psychological distress - 0.55 - 1.00 – - 0.11 0.015*
Function score (r 2 = 0.22)    
   Contralateral knee pain - 7.18 - 11.43 – - 2.93 0.001*
   Psychological distress - 0.53 - 0.82 – - 0.24 0.004*
   BMI - 0.42 - 0.72 – - 0.12 0.006*
   Use of a walking aid - 4.81 - 8.70 – - 0.94 0.015*
  1. Stepwise multiple regression analysis. Age and gender were forced into all models.
  2. Multivariate unstandardized linear regression coefficients. For each unit of the participants' characteristics, there is in average a β increase (+) or a decrease (-) on the WOMAC score. A positive β has a positive effect on the participants' condition and a negative β has a negative effect.
  3. * p < 0.05
  4. § BMI = Body mass index