PHQ-9: Patient Health Questionnaire

This page introduces you to the Patient Health Questionaire (PHQ-9), a 9-question screening questionnaire used to assess symptoms of depression.

It is widely used in primary care, psychology and research to detect and monitor depression severity.

This Questionnaire has been prepared using comprehensice scientific works. Click on the link below to see the references:

View scientific references

The PHQ-9: Kroenke, Spitzer & Williams

In order to keep your data secure, we require that you login or register prior to taking the invetory.

Click or tap on the link below to do this:

Login or register

Do the questionnaire