An Investigation into Psychometric Properties of Persian Version of World Health Organization Five Well-being Index

Introduction:Prevalence of positive approach to health and mental health has caused more researchers' attention to use measures based on this approach. One of these measures is World Health Organization Five Well-being Index. This study aimed to evaluate psychometric properties of Persian version of WHO-5 Well-being Index.

Method: The research method was descriptive and correlation. The study sample included 498 university students who were selected voluntary and responded to World Health Organization Five Well-being Index, Beck Depression Inventory and Oxford Happiness Questionnaire (OHQ-SF).

Results: Results of exploratory & confirmatory factor analysis showed that factor structure of WHO-5 Well-Being Index was unidimensional. The internal consistency of World Health Organization Five Well-being Index's items was high and its Cronbach's alpha was 0.89 also test-retest coefficient of index was 0.82. Significant correlation between WHO-5 Well-Being Index's scores with Oxford Happiness Questionnaire's scores indicate good convergent validity (0.57) and also demonstrate appropriate divergence with Beck Depression Inventory's scores  validity (-0.61). Generally, results showed that WHO-5 Well-Being Index is valid and reliable instrument to measure normal people's subjective well-being and quality of life.

Conclusion: Using of WHO-5 Well-Being Index is reliable independent of culture, unidimensional and short to assess subjective well-being that facilitates clinical and research studies in different medical, psychiatric and psychological fields.

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