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Background: Measurement in psychiatric services is important for the development of a psychiatric tool for budget allocation.
Objective: To translate the Health of the Nation Outcome Scales (HoNOS) into Thai and to assess its psychometric properties.
Material and Method: The HoNOS was translated into Thai, by using the standard of “forward-backward” translation procedure. Two psychiatric nurses interviewed subjects together but independently rated their scores. The subjects were 23 acute inpatients and 23 sub-acute inpatients. The reliability and validity was assessed.
Results: The Cronbach’s alpha coefficient of the Thai HoNOS was 0.68. It had a high correlation (r > 0.80) with the Brief Psychiatric Rating Scale (BPRS), the Global Assessment of Functioning (GAF) and the Clinical Global Impression (CGI). It suggested high concurrent validity. It had a satisfactory power (p < 0.05) in discriminating overall clinical outcomes between acute and sub-acute psychiatric inpatients.
Conclusion: The Thai HoNOS fulfils the requirements of a psychiatric outcome scale for routine use in inpatient service.
Keywords: Health of the Nation Outcome Scales (HoNOS), Psychiatric patient, Measurement, Thailand