Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 97 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Forgive and Forget: The Impact of Medical Debt Forgiveness on Financial 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...

Randomized Evaluation of the Nurse Family Partnership in South Carolina

Researchers are evaluating the impact of an intensive nurse home visiting program for low-income mothers on pregnancy and birth outcomes, child health and development, and future life-courses for the family. The program had no effect on adverse birth outcomes or prenatal outcomes such as health care...

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

The Impact of Informational Interventions about Police Alternatives on Police Reliance in the United States

Meghna Baskar
Tony Cheng
Rei Mariman
Researchers conducted a randomized evaluation to test the impact of providing information about police alternatives on individuals' reported likelihood of calling the police and a follow-up randomized evaluation to understand key public-safety stakeholders’ receptiveness of police alternatives. The...

Providing Financial Incentives and Behavioral Nudges to Encourage Covid-19 Vaccine Uptake in the United States

Tom Chang
Rajiv Pramanik
Samir Shah
Researchers evaluated the impact of financial incentives, public health video messages, and access to a vaccine scheduling link on Covid-19 vaccination intentions and vaccine take-up in the United States. None of the interventions led to increases in vaccine take-up after thirty days. In a...

The Impact of Unconditional Cash Transfers on Health Outcomes in Chelsea, Massachusetts

Sumit Agarwal
Benjamin Le Cook
The City of Chelsea implemented a cash transfer program called Chelsea Eats, which provided eligible households with up to US$400 per month for nine months. Researchers conducted a randomized evaluation on the impact of the unconditional cash transfer on health care utilization and a variety of...

The Effects of a Nationwide Medicare Bundled Payment Reform Program in the United States

Researchers examined the impact of bundled payments on Medicare spending, utilization, and quality of care for knee and hip replacements, two common and expensive medical procedures. Evidence from the first year of implementation of a five-year mandatory bundled payment model showed a reduction in...

The Impact of Assignment to Different Managed Care Organizations on Medicaid Spending and Health Care Use in the United States

Researchers are conducting a randomized evaluation to test the relative impact of assignment to different MCOs on health care utilization and expenditure.