AppLink Apps
PHQ-9 Depression Test Questionnaire
The Patient Health Questionnaire (PHQ) is a widely-used self-report inventory designed to screen and diagnose mental health disorders such as Depression , anxiety, alcohol use disorder, eating disorders, and somatoform disorders. Developed by Pfizer Inc, the PHQ is based on the Primary Care Evaluation of Mental Disorders (PRIME-MD), a diagnostic tool created in the mid-1990s. The PHQ provides healthcare providers with a structured format to assess patients' mental well-being and guide treatment decisions. Its multiple-choice format makes it easy to administer and interpret, making it a valuable tool in clinical practice.