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Mean pre- and post-treatment Visual Analogue Scale-scores in the Autologous Conditioned Serum (ACS), ACS+Cortisone (ACS+C), and ACS+Cortisone+recombinant IL-1 receptor antagonist protein (ACS+C+rIRAP) groups. N, number of hips; VAS, Visual Analogue Scale (0=no pain, 10=most severe pain). Error bars indicate standard errors of mean (SE). P values were calculated by one-way within-subjects analyses of variance (ANOVAs) with the effect size ?2 (?0.14=large, ?0.06=moderate, ?0.01=small).
