From "A Population-Based Approach to Diabetes Management in a Primary Care Setting: Early Results and Lessons Learned." Effective Clinical Practice, August/September 1998. 1:12-22.
Figure 1. Rates of dilated retinal examinations (diamonds) and hemoglobin A1c (HbA1c) testing ( circles) among diabetic patients at Group Health Cooperative of Puget Sound since 1993. HEDIS = Health Plan Employer Data Information Set.