Validation of the Patient Health Questionnaire–9 and Patient Health Questionnaire–2 in the General Korean Population

Objective The Patient Health Questionnaire–9 (PHQ-9) and PHQ-2 have not been validated in the general Korean population. This study aimed to validate identify optimal cutoff scores of PHQ-9 screening for major depression population.Methods We used data from 6,022 participants Epidemiological Catchment Area Study Psychiatric Disorders 2011. Major was diagnosed according Composite International Diagnostic Interview. Validity, reliability, receiver operating characteristic curve analyses were performed using results Euro Quality life-5 dimension (EQ-5d).Results Of participants, 150 with (2.5%). Both demonstrated relatively high reliability their highly correlated “anxiety/depression” score EQ-5d. 5, a sensitivity 89.9%, specificity 84.1%, positive predictive value (PPV) 12.6%, negative (NPV) 99.7%, likelihood ratio (LR+) 5.6, (LR-) 0.12. 2, 85.3%, 83.2%, PPV 11.6%, NPV 99.5%, LR+ 5.1, LR- 0.18.Conclusion are valid tools population, suggested values 5 2 points, respectively.