CORR Insights^®: A Crosswalk Between UCLA and Lower Extremity Activity Scales

Excerpt

Ghomrawi and colleagues report on the development of a crosswalk (conversion table), between the University of California Los Angeles activity scale (UCLA) and Lower Extremity Activity Scale (LEAS) scores for patients who underwent THA or TKA. The distributions of the two scores were equated using an equipercentile method, which locates the respective scores for each instrument that have the same percentile ranks. The table can be used to convert group means for one score to the other score for purposes of pooling data and comparing results from studies or registries that use either score. The current study provides important information that may facilitate the aggregation of data and results across different studies and registries that utilize the UCLA or LEAS scores for purposes of comparing outcomes across studies and conducting meta-analyses and systematic reviews. …