MedicalResearch.com Interview with: John N. Mafi, MD, MPH Division of General Internal Medicine and Health Services Research Department of Medicine David Geffen School of Medicine at UCLA RAND Health, RAND Corporation MedicalResearch.com: What is the background for this study? What types of services are low-value in this setting?  Response: For decades we have known that offering routine preoperative testing for patients undergoing cataract surgery provides limited value, yet low-value preoperative testing persists at very high rates, even at Los Angeles County Department of Health Services, one of the largest safety net health systems in the United States. (more…)