Search our database of 1070 randomized evaluations conducted by our affiliates in 90 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

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Improving Immunization Coverage Through Incentives, Reminders, and Social Networks in India

Researchers are working with the state government of Haryana to evaluate the impact of three programs aimed at increasing child immunization by building demand for vaccination: the use of small, non-financial incentives, tailored reminders, and leveraging village social networks.

Health Care Hotspotting in the United States

Annetta Zhou
Sarah Taubman

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 ongoing study, researchers are evaluating the impact of a care management program that provides...

Extending Health Insurance to the Informal Sector Through Microfinance in Nicaragua

Laurel Hatt
Mursaleena Islam
Freddy Solis Diaz
Martha Gonzalez Monada
Anne Fitzpatrick

In recent years, there has been an increased interest in providing health insurance to poor and vulnerable populations as a means of increasing access to quality healthcare and protecting families from the substantial costs and subsequent income shocks. This evaluation measured the determinants of...

Contraceptive Adoption, Fertility, and the Family in Zambia

Women who received private access to vouchers for contraceptives were more likely to take up and use contraception, compared to women whose husbands were involved in the voucher program.

The Impact of Messaging and Incentives on Survey Response Rates to Understand Barriers COVID-19 Testing in the United States

To better understand barriers to COVID-19 testing for underserved communities, researchers evaluated the impact of varying flyer messaging and survey incentive rates on survey responses. Researchers will use survey responses to identify the most important barriers to testing and potential community...

Commitment Contracts for Smoking Cessation in the United States

Daren Anderson
Amanda Kowalski
Jody Sindelar
This study will examine whether a combination of positive and negative commitment devices can induce long-term smoking cessation in smokers from a low-to-moderate income background in Connecticut.

The Effect of Behavioral Nudges via Mailed Letters on Subsidized Health Insurance Take-up

Timothy Layton
Keith Ericson
This study will examine the impact of different reminder letters sent by mail (behavioral nudges) on enrollment in subsidized health insurance plans. The study will also examine the characteristics of the marginal enrollees, focusing especially on health risk to assess the extent of adverse...

The Effect of Informative Letters on the Prescription and Receipt of Seroquel in the United States

David Yokum
Shantanu Agrawal
Frank Tetkoski
Michael L. Barnett
Jackson Le
This study evaluated the impact of strongly-worded peer comparison review letters sent to high prescribers of quetiapine by the Centers for Medicare & Medicaid Services (CMS) on prescribing behavior and patient-level outcomes. Researchers found that the letters caused substantial and long-lasting...