Source :

PHQ9 Copyright © Pfizer Inc. All rights reserved. PRIME-MD ® is a trademark of Pfizer Inc.

Kroenke, Spitzer, & Williams. (2001). The PHQ‐9. Journal of General Internal Medicine 16(9), 606-613. Retrieved from http://onlinelibrary.wiley.com/doi/10.1046/j.1525-1497.2001.016009606.x/pdf

Please note: Online screening tools are not diagnostic instruments. You are encouraged to share your results with a physician or healthcare.