Practice-Based Learning and Systems-Based Practice: Detection and Treatment Monitoring of Generalized Anxiety and Depression in Primary Care

Abstract

Quality assurance/quality improvement projects are an important part of professional development in graduate medical education. The purpose of our quality improvement study was to evaluate whether (1) the Generalized Anxiety Disorder (GAD-7) scale questionnaire increases detection of anxiety and (2) the Quick Inventory for Depressive Symptomatology Self Report (QIDS-SR) increases detection of depression in a primary care setting. We also aimed to determine whether monitoring patients with depression or generalized anxiety using the QIDS-SR and GAD-7 scales influences treatment changes in the primary care setting. Patients seen in a general internal medicine clinic between August 2008 and March 2009 were asked to fill out the QID-SR questionnaire and GAD-7 as part of a resident quality improvement project. We measured the prevalence of anxiety and depression during 6months prior to the use of the GAD-7 and QIDS-SR instruments during the intervention period. We also compared the frequency of treatment changes initiated both 12months prior to and during the intervention period. The aforementioned measures were performed with use of a retrospective chart review. The prevalence of anxiety was 15.2% in the pre-intervention period and 33.3% in the intervention period, and the prevalence of depression was 38.9% in the prescreening period and 54.8% during the screening period (P value for both was <0.001). The change in anxiety therapy was 21.6% in the prescreening period and 62.2% in the screening period (P = .028). The change in depression therapy was 23.2% in the pre-intervention period and 52.1% in the intervention period (P = .025). Routine screening for depression and anxiety may help clinicians detect previously undiagnosed anxiety and depression and also may facilitate identification of needed treatment changes. Further work is needed to determine whether routine screening improves patient outcomes.