Validation of the Positive and Negative Affect Schedule in People with Chronic Kidney Disease

Abstract

Aim: to analyze the psychometric properties of the Portuguese version of the Positive and Negative Affect Schedule scale in people with chronic kidney disease on hemodialysis. Method: this was a methodological study. A random sample of 171 people chronic kidney disease who receive hemodialysis in two clinics in the region of Lisbon, Portugal. Data was collected from May to June 2015. The psychometric properties were evaluated: Validity (construct, convergent and predictive), reliability (Cronbach’s α) and stability (test-retest). Results: showed that the Positive and Negative Affect Schedule scale has two distinct dimensions of positive and negative affect, reliable and stable both when obtained by interview or by questionnaire. Conclusion: the validity and reproducibility of the Portuguese version of the Positive and Negative Affect Schedule scale in people with chronic kidney disease are consistent with the original version and the English version of this scale.