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Results from each study. Interv., intervention; Std Mean Difference, standardized mean difference; IV, inverse variance; 95% CI, 95% confidence interval; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index; VAS, visual analogue scale; HOOS, Hip disability and Osteoarthritis Outcome Scale; KOOS, Knee injury and Osteoarthritis Outcome Scale; NRS, numerical rating scale; BPI, brief pain inventory.
