Validity and responsiveness of presenteeism scales in chronic work-related XXXX .

@entity1 @entity851 @entity2045 @entity158 @entity85 @entity1118 @entity309 @entity922
BACKGROUND: The Work Limitations Questionnaire-25 (WLQ-25) and the Work Instability Scale for @entity309 (RA-WIS) have been used to measure at-work disability related to @entity85 . However, a recent systematic review has shown that important psychometric properties still needed to be evaluated. OBJECTIVE: The purpose of this study was to establish the validity and responsiveness of the WLQ-25 and RA-WIS in @entity1 with chronic work-related @entity851 . DESIGN: Two-hundred six @entity1 with chronic @entity851 who attended a specialty clinic operated by the Workplace Safety _ Insurance Board of Ontario were evaluated at their initial visit and 6 months later. METHODS: Questionnaires completed at each evaluation were: the WLQ-25, the RA-WIS, the QuickDASH, the @entity158 subscale of the Shoulder @entity158 and Disability Questionnaire, and the @entity1118 Grade Questionnaire. At the 6-month evaluation, @entity1 completed a global rating of change question. Known-group and construct convergent validity were assessed using analysis of variance and Pearson correlations, and standardized response means (SRMs) were used to assess responsiveness. @entity922 ( @entity922 ) also were determined. RESULTS: The WLQ-25 and RA-WIS had low to moderate correlations with @entity158 and disability scales (.28<r<.62) and discriminated among different functional categories (P<.001). For improved @entity1 , the WLQ-25 (SRM=0.65 for summed score, SRM=0.63 for index score) and the RA-WIS (SRM=0.66) demonstrated moderate responsiveness. The CID for improvement was estimated to be 13/100 points for the WLQ-25 summed score, 5/28.6 points for the WLQ-25 index score, and 4/23 points for the RA-WIS. LIMITATIONS: The external criterion of change was specific to change in @entity2045 and not to change in work ability or productivity. CONCLUSIONS: The WLQ-25 and RA-WIS provide different information from that provided by @entity158 and disability measures. They discriminate among functional outcome subgroups and detect improvement over time in @entity1 with chronic work-related @entity851 .
