Psychometric Properties of the Arabic Version of the Pittsburgh Sleep Quality Index in Hemodialysis Patients
Sleep and Vigilance(2022)
摘要
Purpose The Pittsburgh Sleep Quality Index (PSQI) is widely used in screening for self-reported sleep disturbances in clinical groups or healthy populations. The literature lacks rigorous psychometric evaluation of the Arabic Pittsburgh Sleep Quality Index (A-PSQI) in hemodialysis (HD) patients. This study aims to estimate reliability, extract, and test the underlying factor structure of the A-PSQI in HD patients, and determine its suitability for this clinical group. Methods In a sample of 461 HD patients (287 males, 62.3%) recruited from all health districts in Kuwait., inter-components, between A-PSQI components, and its global score correlations were estimated. Component analysis was conducted to identify inconsistent components with the rest. Cronbach’s α and McDonald’s ω estimated reliability. Stability and convergent validity were assessed. Construct validity was explored by exploratory factor analysis (EFA). Confirmatory factor analysis (CFA) was conducted to test factor structure. Results Patients had a median (Interquartile Range) age of 54 (22) years. The A-PSQI had a mean (SD) score of 7.1 (3.65). The Cronbach α = .634 and McDonald ω = 0.62 indicated moderate reliability. EFA resulted in two factors highly correlated (0.83, PV < 0.001) with A-PSQI global score indicating two distinct constructs. CFA provided weak evidence supporting the one-factor model, but the two-factor model (explained 51.8% of total variance) without the “use of sleep medication” item, which has the smallest corrected-item total correlation, showed a good fit with the smallest AIC. Conclusion The A-PSQI seems moderately reliable to screen for sleep disorders in HD patients. Future research on scoring in the two-factors model is warranted. It can help clinicians better understand sleep disturbance and improve the instrument’s sensitivity.
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关键词
PSQI,Hemodialysis,Reliability,EFA,CFA,Arabic
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