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Correlation between quality scores and outcome or publication year. (A) Significant association between treatment success and study quality score (p<0.001, r=−0.41). (B) Association between percentage of patients returning to play and study quality score (p=0.09, r=−0.23). (C) Association between time to RTP in weeks and study quality score (p=0.94, r=−0.01). (D) Association between study quality score and publication year (p=0.09, r=0.20). D&B, Downs and Black; RTP, return to play.
