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Table 3 Effect of intervention on change in knee pain over 1 year in women with baseline BMI ≥ 25 kg/m2

From: Effect of a low-intensity, self-management lifestyle intervention on knee pain in community-based young to middle-aged rural women: a cluster randomised controlled trial

  Intervention, n (%) Control, n (%) P valuea Odds ratio (95% CI)b P valueb
Women who were overweight or obese, n = 242 n = 137 n = 105    
Knee pain worsening 19 (13.9) 27 (25.7) 0.02 0.45 (0.23, 0.87) 0.02
Subgroup with no knee pain at baseline, n = 147 n = 85 n = 62    
Incidence of knee pain 13 (15.3) 13 (21.0) 0.37 0.68 (0.29, 1.62) 0.39
Subgroup with knee pain at baseline, n = 95 n = 52 n = 43    
Knee pain increasing 6 (11.5) 14 (32.6) 0.01 0.28 (0.09, 0.87) 0.03
Knee pain improvement 36 (69.2) 23 (53.5) 0.12 2.16 (0.87, 5.32) 0.10
  1. aDifferences between intervention and control groups using chi squared test
  2. bLogistic regression, intervention vs control group, adjusted for age, body mass index, town cluster, and baseline WOMAC pain score