Search our database of 1018 randomized evaluations conducted by our affiliates in 84 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

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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...

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...

Reducing Inappropriate Prescribing of Controlled Substances in the United States

David Yokum
Shantanu Agrawal
Researchers tested whether an informative letter campaign could reduce inappropriate prescribing of controlled substances in Medicare Part D. Letters had no detectable effect on prescribing. In ongoing work, researchers are testing alternative versions of letters.

The Impact of Informational Interventions on Health Insurance Take-up and Market Risk in the United States

Richard Domurat
Isaac Menashe
Researchers studied the impact of reminder letters addressing possible barriers related to information and behavior on insurance take-up, as well as their impact on health insurance market risk. The reminder letters reducing informational and behavioral barriers to enrollment increased insurance...

The Impact of Prescribing Food as Medicine among Individuals Experiencing Diabetes and Food Insecurity

Andrea Feinberg
John Bulger
John Cawley
Diabetes is one of the most costly and prevalent diseases in the United States and is closely linked to unhealthy diets and food insecurity. Researchers are evaluating the impact of the Geisinger Health System’s Fresh Food Farmacy (FFF), a program which provides fresh food and diabetes education, on...