A System-Based Approach to Depression Management in Primary Care Using the Patient Health Questionnaire-9 Ramona S. DeJesus, MD, Kristin S. Vickers, PhD, LPP, Gabrielle J. Melin, MD, Mark D. Williams, MD Mayo Clinic Proceedings Volume 82, Issue 11, Pages 1395-1402 (November 2007) DOI: 10.4065/82.11.1395 Copyright © 2007 Mayo Foundation for Medical Education and Research Terms and Conditions
FIGURE 1 Patient Health Questionnaire (PHQ-9). The PHQ-9 copyright 1999 Pfizer Inc. All rights reserved. Reproduced with permission. Mayo Clinic Proceedings 2007 82, 1395-1402DOI: (10.4065/82.11.1395) Copyright © 2007 Mayo Foundation for Medical Education and Research Terms and Conditions