ArticleInternational braz j urol : official journal of the Brazilian Society of Urology
Quality of Life in Patients with Ureteral Stones: Translation and Validation of the Brazilian Version of the Cambridge Ureteral Stone PROM (Br-CUSP).
Article in International braz j urol : official journal of the Brazilian Society of Urology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeThere is currently no validated instrument in Brazil specifically designed to assess the quality of life (QoL) of patients with ureteral stones. The Cambridge Ureteral Stone Patient-Reported Outcome Measure (CUSP) is a self-administered questionnaire that evaluates the QoL impact of ureteral stones over the preceding seven days. This study aimed to translate, culturally adapt, and validate the CUSP for Brazilian Portuguese (Br-CUSP) for clinical and research applications. MATERIALS AND
methodsThe CUSP questionnaire was translated into Portuguese according to Guillemin's cross-cultural adaption guidelines. Patients with and without ureterolithiasis completed both the Br-CUSP and SF-12 questionnaires. Psychometric validation included assessment of internal consistency, test-retest reliability, convergent validity, and discriminant validity.
resultsA total of 156 participants completed both questionnaires. No inconsistencies emerged during univariate analysis. Confirmatory factor analysis supported the six-factor model with satisfactory fit indices. All factor loadings exceeded 0.50. Internal consistency was high across all domains (Cronbach's α = 0.72 - 0.98; McDonald's ω = 0.73 - 0.98). Test-retest reliability demonstrated strong temporal stability. Inter-domain correlations (Spearman's p = 0.45 - 0.82) supported structural coherence. Convergent validity was confirmed through inverse correlations with SF-12 scores. Discriminant validity was demonstrated by significant score differences between patients with and without ureteral stone, with large effect sizes.
conclusionsThe Brazilian Cambridge Ureteral Stone Patient-Reported Outcome Measure is a valid, reliable tool for assessing health-related quality of life in Brazilian patients with ureteral stones. Its implementation can enhance both clinical assessment and research into patient-centered outcomes in urolithiasis.
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