The reliability and validity of a brief self-report questionnaire to screen for mental health problems: The Health Dynamics Inventory

Mental health problems are underrecognized in medical settings, leading to inadequate treatment. The present paper describes the development of the Health Dynamics Inventory (HDI), a brief, self-report questionnaire developed to evaluate mental health functioning. The HDI was written to evaluate the three aspects of mental disorders as described in the Diagnostic and Statistical Manual of Mental Disorders (DSM): (1) the experience of emotional or behavioral symptoms; (2) emotional distress; and (3) psychosocial impairment. This study evaluated the psychometric properties and construct validity of its items, scales, and subscales. Results indicated that the items distinguish patients from nonpatients, that the instrument's scales and subscales are reliable, and that the scales and subscales discriminates between persons with mental health concerns or diagnosable problems and those without such concerns or problems. The utility of the instrument for screening mental health problems in primary care settings is discussed.