Additional file 1 of Efficacy and safety of radiofrequency treatment for improving knee pain and function in knee osteoarthritis: a meta-analysis of randomized controlled trials

Additional file 1: Fig. S1. Forest plots for the assessment of OKS score between the radiofrequency group and control group. At (a) 1-2 weeks, (b) 4 weeks, and (c) 12 weeks. OKS, Oxford knee score; SD, standard deviation; CI, confidence interval. Figure S2. Sensitivity analysis for the assessment of pain scores at 4 weeks after treatment. SD, standard deviation; CI, confidence interval. Table S1. Subgroup analysis of the WMD for pain scores between the RF and control groups at 4 weeks after treatment. Table S2. Subgroup analysis of the WMD for pain scores between the RF and control groups at 12 weeks after treatment.