The 9-item depression scale of the Patient Health Questionnaire.

A brief, validated, patient-administered questionnaire based on the DSM-IV diagnostic criteria for major depressive disorder (MDD)Please download the documents below..

PHQ-9 Description.pdf (English – pdf) [2951 Kb]
PHQ-9 English.pdf (English – pdf) [1058 Kb]
PHQ-9 Malay.pdf (Malay – pdf) [1059 Kb]
PHQ-9 Mandarin.pdf (English – pdf) [1200 Kb]