Russian version of PHQ-2 and 9 questionnaires: Sensitivity and specificity in detection of depression in outpatient general medical practice

Abstract

Aim: Current study aimed to adapt and evaluate the psychometric properties of Russian versions of Patient Health Questionnaires 2 and 9 (PHQ-2 and PHQ-9) used for detection of depression in general medical practice worldwide. Material and methods: Questionnaires were translated into Russian and adapted with regard to linguistic features of population. A study was performed on a sample of 193 patients (130 female, 63 male, mean age 34,6±11,4), who attended general practitioners in outpatient practice department of NRC for Preventive Medicine. Patients filled in PHQ-2 and -9 questionnaires in presence of clinical psychologist and then assessed for depression by a psychiatrist (using ICD-10 criteria). Results: The optimal measures of sensitivity and specificity corresponded to cut-off scores of 3 for PHQ-2 (66,2% and 87,4% respectively) and 10 for PHQ-9 (68,9% and 93,3% respectively).