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International guidelines recommend educational intervention to treat knee osteoarthritis. However, they do not specify the type of intervention and the effectiveness of group educational intervention for knee pain is unclear. We aimed to examine the effectiveness of group educational interventions for people over 50 years old with knee pain compared with a control group. A systematic review and meta-analysis of randomized controlled trials (RCTs). We searched Medline, Cochrane Central Register of Controlled Trials, Physiotherapy Evidence Database, and Cumul