Validade e confiabilidade do King’s Health Questionnaire em homens submetidos à prostatectomia radical

Abstract

Background: Assessing the impact of urinary incontinence on the quality of life of men undergoing radical prostatectomy requires valid and reliable measures. Objective: To analyze the validity and reliability of the King’s Health Questionnaire (KHQ) in men undergoing radical prostatectomy. Methodology: Methodological study. Reliability and structural, concurrent, and convergent validity were analyzed in a sample of 152 men. Significance was set at 0.05. Results: The exploratory factor analysis indicated a two-dimensional structure, and the two factors explained 66.9% of variance. All domains were positively correlated with the International Consultation on Incontinence Questionnaire. Positive correlations were found between urinary incontinence severity and KHQ domains and between the number of pads and Severity measures. Men with urge incontinence had worse levels of quality of life in the domains of Emotions (p = 0.020) and Severity measures (p = 0.013). Cronbach’s alpha was 0.88, ranging from 0.64-0.84 in KHQ domains to 0.91 in McDonald’s omega. Conclusion: The KHQ provided evidence of adequate validity and reliability in men undergoing radical prostatectomy.