MP19-01 DEVELOPMENT OF THE SHORT FORM OF THE WISCONSIN STONE QUALITY OF LIFE (WISQOL) QUESTIONNAIRE FOR ASSESSING THE HEALTH-RELATED QUALITY OF LIFE OF PATIENTS WITH UROLITHIASIS

Abstract

You have accessJournal of UrologyHealth Services Research: Practice Patterns, Quality of Life and Shared Decision Making II (MP19)1 Sep 2021MP19-01 DEVELOPMENT OF THE SHORT FORM OF THE WISCONSIN STONE QUALITY OF LIFE (WISQOL) QUESTIONNAIRE FOR ASSESSING THE HEALTH-RELATED QUALITY OF LIFE OF PATIENTS WITH UROLITHIASIS Kristina L. Penniston, Shuang Li, and Stephen Y. Nakada Kristina L. PennistonKristina L. Penniston More articles by this author , Shuang LiShuang Li More articles by this author , and Stephen Y. NakadaStephen Y. Nakada More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002004.01AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: The 28-item Wisconsin Stone Quality of Life questionnaire (WISQOL) is a self-administered, health-related quality of life (HRQOL) instrument for assessing the impact of urolithiasis. Prior reports confirm the WISQOL′s reliability, validity, and responsiveness. Its use has helped to identify specific HRQOL decrements after or between stone events. To address needs of large clinical studies and long-term monitoring, for which efficiency competes with precision, we developed a short-form (SF) version of the WISQOL. METHODS: We use the WISQOL in our clinical stone practice. Patients are invited to complete it at every appointment. Data for this study were from patients (n=704) who completed the WISQOL between 6/2017 and 2/2020 at a Urology Clinic appointment with either the primary stone surgeon or a nurse practitioner. Responses missing >1 item (n=196) were excluded. Remaining patients were 53% female, 54±15 y, and mixed for stone history (min-max, 1 to >50 lifetime stone events). Nearly half (49%) had current stones; 30% were experiencing stone-related symptoms or had done so in the past 4 weeks. We calculated WISQOL total and domain scores. We used item analysis and factor analysis to evaluate all 28 WISQOL items. RESULTS: Items with item-total correlation coefficients <0.84 were eliminated (n=20). Of the 8 remaining items, linear regression analysis and cross loading identified 6 that best predicted total WISQOL scores (p<0.001), representing 2 of the 4 WISQOL domains (D1, social; and D2, emotional). Using these items, 80% of patients placed in the same quantile for total score as with the original WISQOL. Item-score correlation coefficients (original vs WISQOL-SF) ranged from 0.84-0.93; correlation with total score was 0.95 (p<0.001 for all comparisons, fig.). The WISQOL-SF Cronbach α-coefficient was 0.94 compared to 0.97 for the original WISQOL. Of patients misplaced for quantile by the WISQOL-SF, 32 and 30% were patients with stones and/or stone symptoms at the time; they tended to score higher for HRQOL with the WISQOL-SF. CONCLUSIONS: We produced the WISQOL-SF, a 6-item version of the WISQOL suitable for efficient assessments. While more testing is needed, the WISQOL-SF appears best suited for long-term follow up of HRQOL in stones. Source of Funding: None © 2021 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 206Issue Supplement 3September 2021Page: e327-e327 Advertisement Copyright & Permissions© 2021 by American Urological Association Education and Research, Inc.MetricsAuthor Information Kristina L. Penniston More articles by this author Shuang Li More articles by this author Stephen Y. Nakada More articles by this author Expand All Advertisement Loading ...