Abstract
Objective: The aim of this study was to validate the World Health Organisation 5-item well-being index(WHO-5) in a sample of the adult population living in a chronically Arsenic affected area in rural WestBengal.Materials and Method: The reliability was measured through Cronbach’s alpha. For evaluating the validityof the construct, Barlett sphericity test and the Kaiser-Meyer-Olkin sample adequacy test was conducted.Exploratory factor analysis was done to study the dimension of factors. Correlations were explored betweenthe WHO-5 scores and study variables.Results: The mean score of the total WHO-5 score was 13.09(SD=5.276). A Cronbach’s alpha of 0.794indicated acceptable internal consistency. The Bartlett’s Test of Sphericity was significant (Chi =167.86,df=10, p<0.001). The KMO measure for sampling adequacy was 0.826. So the sample was factorable.Exploratory factor analysis confirmed the one-factor structure that accounted for 56.49% variance withan eigenvalue of 2.825. A significant correlation was observed for WHO-5 with health expenditure andpostponement of check-up.Conclusion: The WHO-5 well-being index showed acceptable internal validity and construct validity witha one-dimensional structure.
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