Patient-reported well-being: psychometric properties of the world health organization well-being index in specialised community mental health settings.

The Five-item World Health Organization Well-being Index (WHO-5) is an increasingly used measure of generic well-being, but there is no evidence to support whether outpatients consider the questionnaire valuable. As the WHO-5 has not yet been psychometrically evaluated in specialised community mental health settings, an evaluation of its validity seems warranted. The aim of this cross-sectional study was to examine the psychometric properties of the WHO-5 in this type of setting. Data was collected from an outpatient center (N = 191 adults). Results indicate that the questionnaire was feasible to administer (n = 57 patients), it reported low mean Burden-scores and high Positive-Value scores, and had excellent internal consistency. No evidence of floor or ceiling effects was found. Results supported the unidimensional structure of the questionnaire. Significant differences were found concerning patients' diagnoses, with patients with schizophrenia diagnoses reporting higher scores and patients with depression and personality disorders reporting lower ones. When comparing the WHO-5 total score and patients' attitudes toward medication, negative correlations were observed with psychological reactance, as well as positive aspects of psychiatric medication. The present study demonstrates that the WHO-5 is feasible to administer and has robust psychometric properties in specialised community mental health centres.