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Table 2 Effect of intervention on change in knee pain over 1 year

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
Whole population, n = 390 n = 206 n = 184    
Knee pain worsening 28 (13.6) 33 (17.9) 0.24 0.67 (0.38, 1.17) 0.16
Subgroup with no knee pain at baseline, n = 259 n = 139 n = 120    
Incidence of knee pain 20 (14.4) 18 (15.0) 0.89 0.92 (0.45, 1.84) 0.81
Subgroup with knee pain at baseline, n = 131 n = 67 n = 64    
Knee pain increasing 8 (11.9) 15 (23.4) 0.08 0.37 (0.14, 1.01) 0.05
Knee pain improvement 43 (64.2) 41 (64.1) 0.99 1.13 (0.53, 2.43) 0.75
  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