Minimal Important Change and Minimal Clinically Important Difference in Pain and Function With Exercise in Hip Osteoarthritis

Abstract

Objective: The objective of this study was to estimate the minimal important change (MIC) and minimal clinically important difference (MCID) for pain and physical function in individuals with hip osteoarthritis (OA) following a physiotherapist-guided exercise intervention. Methods: Secondary analysis from a randomized controlled trial of 196 adults with hip OA allocated one of two nine-month exercise programs. Patient-reported outcomes measures for hip pain severity (Numeric Rating Scale [NRS], Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC] pain subscale) and physical function (WOMAC physical function subscale, Patient-Specific Functional Scale [PSFS]) were collected ..