Psychometric Properties of the Turkish Version of the Fluid Intake Appraisal Inventory in Adults Receiving Hemodialysis

Abstract

IntroductionEffective self-management of fluid intake in hemodialysis relies on self-efficacy. Although regular assessments with valid tools are crucial, no suitable measurement exists for the Turkish population. This study evaluates the reliability, validity, and interpretability of the Turkish version of the Fluid Intake Appraisal Inventory.MethodsThis cross-sectional study collected data from December 2021 to November 2022. It analyzed reliability, validity, and interpretability.ResultsThe 202 adults receiving hemodialysis were evaluated. The scale showed high internal consistency with Cronbach alpha = 0.954 and good test-retest reliability with intraclass correlation coefficients = 0.975, 95% confidence interval: 0.786-0.992, and no measurement error. It demonstrated excellent content validity with scale level content validity index >= 0.90 and good construct validity with a negative moderate correlation to interdialytic weight gain. For structural validity, the model fit indices were chi 2/df = 5.7, root mean square error of approximation = 0.15, goodness of fit indexes = 0.58, Tucker-Lewis Index = 0.57, comparative fit index = 0.6, and standardized root mean square residual = 0.10.ConclusionThis inventory is a valid and reliable tool for assessing self-efficacy in fluid intake among the Turkish hemodialysis population.