Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 96 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Health Care Hotspotting in the United States

Rapidly rising health care costs in the United States have generated interest in identifying effective ways to improve the quality of care delivery and reduce waste within the health care system. In this study, researchers evaluated the impact of a care management program that provides medical and...

Workplace Wellness Programs to Improve Employee Health Behaviors in the United States

Zirui Song
Researchers conducted a randomized evaluation of a comprehensive, multi-site workplace wellness program to evaluate the program’s impact on self-reported and clinical health outcomes, health care spending and utilization, and employment outcomes. The program did not have a measurable effect on any...

Clinical Decision Support for Outpatient High-Cost Radiology Ordering in the United States

Bruce Darrow
Joseph Kannry
Madhu Mazumdar
David Mendelson
Researchers are studying the impact of a clinical decision support system on the ordering of high-cost scans.

The Oregon Health Insurance Experiment in the United States

Heidi Allen
Mira Bernstein
Jonathan Gruber
Joseph P. Newhouse
Eric Schneider
Jae Song
Bill Wright
Alan Zaslavsky

Forgive and Forget: The Impact of Medical Debt Relief on Financial and Health Outcomes in the United States

In this randomized evaluation, researchers evaluated the impact of a medical debt relief program (that buys and relieves a portion of individuals’ medical debt) on measures of mental and physical health, health care utilization, and financial well-being—including financial distress, credit score...

Matching Provider Race to Increase Take-up of Preventive Health Services among Black Men in the United States

Owen Garrick
Grant Graziani
Researchers examined the impact of race concordance (when the race of a patient matches that of their physician) and incentives on the take-up of preventive health services by Black men. Results indicate that physician race concordance significantly boosted demand for all preventive health services...