The Patient Health Questionnaire (PHQ9) （病人健康问卷(PHQ9)）.pdf

STABLE RESOURCE TOOLKIT The Patient Health Questionnaire (PHQ-9) - Overview The PHQ-9 is a multipurpose instrument for screening, diagnosing, monitoring and measuring the severity of depression: n The PHQ-9 incorporates DSM-IV depression diagnostic criteria with other leading major depressive symptoms into a brief self-report tool. n The tool rates the frequency of the symptoms which factors into the scoring severity index. n Question 9 on the PHQ-9 screens for the presence and duration of suicide ideation. n A follow up, non-scored question on the PHQ-9 screens and assigns weight to the degree to which depressive problems have affected the patient’s level of function. Clinical Utility The PHQ-9 is brief and useful in clinical practice. The PHQ-9 is completed by the patient in minutes and is rapidly scored by the clinician. The PHQ-9 can also be administered repeatedly, which can reflect improvement or worsening of depression in response to treatment. Scoring See PHQ-9 Scoring on next page. Psychometric Properties n The diagnostic validity of the PHQ-9 was established in studies involving 8 primary care and 7 obstetrical clinics. n PHQ scores ≥ 10 had a sensitivity of 88% and a specificity of 88% for major depression. n PHQ-9 scores of 5, 10, 15, and 20 represents mild, moderate, moderately severe and severe depression.1 1. Kroenke