Table 3 Changes in patient-reported outcome summary scores in 54 patients who we assessed on two occasions over a mean period of 8.4 years. Values are expressed as the differences in mean scores with 95% confidence intervals, adjusted for age at most recent assessment, number of hip operations per patient, and residual acetabular dysplasia

From: Patient-reported outcomes in young adults with osteonecrosis secondary to developmental dysplasia of the hip - a longitudinal and cross-sectional evaluation