PHQ-9 – Patient Depression Questionnaire
The PHQ-9 is a validated tool to assess for depression.
Formula :
Points are given for each variable.
Explanation of Result :
1-4 : Minimal depression
5-9 : Mild depression
10-14 : Moderate depression
15-19 : Moderately severe depression
20-27 : Severe depression
* Please verify all calculations prior to clinical use.
References
- Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. 2001 Sep;16(9):606-13. PMID: 11556941.