The Minimum Clinically Important Difference in Scoliosis Research Society-22 Appearance, Activity, and Pain Domains After Surgical Correction of Adolescent Idiopathic Scoliosis

Abstract

The MCID for the Pain domain was 0.20 and 0.98 for Appearance. Because these patients were generally in good health, a minimal though significant change in activity was observed, such that the calculated MCID was within the measurement error. As expected, the largest and most important change was in the Appearance domain. Future studies are needed to determine the MCID for the mental domain and the total SRS score and to further validate the MCID values in this study.