Psychometric Properties of the Persian Version of Patient Health Questionnaire-9

Objectives: The Patient Health Questionnaire-9 (PHQ-9) is one of the most commonly used measures for screening, diagnosing and monitoring depression. So far, four studies have examined some psychometric properties Persian version PHQ-9 in physical psychiatric patients; however, aspects its psychometrics not yet been adequately evaluated student population. Therefore, this study aims to examine more Methods: In descriptive study, 463 students Guilan University Medical Sciences academic year 2018-19 participated who were selected using a convenience sampling method. reliability was assessed internal consistency test-retest 2-week interval. Its construct validity by exploratory confirmatory factor analyses. To evaluate convergent validity, second Beck Depression Inventory (BDI-II), depression subscale 21-item Anxiety (DASS-21), neuroticism NEO Five Factor (NEO-FFI) negative affect Positive Affect Negative Scale (PANAS) used. openness NEO-FFI positive PANAS also assess discriminant validity. Results: Cronbach’s alpha coefficient 0.856 intraclass correlation 0.869 indicated high PHQ-9, respectively. Exploratory analysis results showed one-factor structure, accounting 47.59% total variance. Confirmatory that all questions related factor. score with BDI-II (r= 0.769), 0.508), DASS-21 0.647) 0.430) an acceptable while -0.444) validity; had no significant relationship indicates 0.116). Conclusion: can be clinical research fields screen, diagnose, monitor and/or subclinical Iranian