Although there is growing interest in assessing the quality of life (QoL) in mental health services, there is currently no specific measurement tool for mental disorders in Turkey. This study aimed to evaluate the psychometric features of the Turkish version of the Mental Health Quality of Life Questionnaire (MHQoL). This methodological study was conducted with 310 patients diagnosed with mental disorders between October 2022 and June 2023. The MHQoL includes a descriptive system (MHQoL-7D) of seven items representing distinct dimensions- self-image, independence, mood, relationships, daily activities, physical health, and future- alongside a visual analog scale measuring general psychological well-being (MHQoL-VAS). Turkish MHQoL yielded a one-factor structure with 7 items and factor loadings ranging from 0.426 to 0.727. Goodness-of-fit indexes of the MHQoL were found to be χ2/df = 1.212, SRMR = 0.026, RMSEA = 0.026, GFI = 0.985, AGFI = 0.969, CFI = 0.995, IFI = 0.995, and TLI = 0.991. Cronbach’s alpha coefficient was measured at 0.792, with item-total correlation coefficients from 0.378 to 0.609. Turkish MHQoL is a reliable and valid tool for evaluating QoL in individuals with mental health challenges.
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