Confirmatory factor analysis of the "Personal Wellbeing Index" in people with Chronic Kidney Disease

Abstract

Objective: To confirm the unifactorial structure of the "Personal Wellbeing Index" in people with chronic kidney disease (CKD) on hemodialysis. Methodology: Methodological study. The random sample included 159 people with CKD on hemodialysis in a Nephrology Service and two clinics in the region of Lisbon, Portugal. Data collection was carried out between March and June 2015. The AMOS software was used for a confirmatory factor analysis, with the maximum likelihood method. The adjustment ratios were used: ratio Chi Square and the degrees of freedom (Χ2 / gl); goodness-of-fit index (GFI); comparative fit index (CFI), Tucker-Lewis index (TLI) and root mean square error of approximation (RMSEA). (3-4) Results: The results of this study [Χ2 / df = 1,871; GFI = 0.96; CFI = 0.97; TLI = 0.95; RMSEA = 0.07] show a good fit to the hypothesis of the solution of a factor, which confirms the solution proposed in the original version (1) and the Portuguese version (2). Conclusions: The Portuguese version of "Personal Wellbeing Index in people with CKD has a single factor. The personal well-being Index or satisfaction with life in general is suitable for measuring the impact of interventions in nursing in people with CKD.