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 reductions in quetiapine prescribing, with no evidence of negative effects on patients.

Researchers evaluated the effects of a large-scale workplace wellness program at the University of Illinois at Urbana-Champaign on employee health behaviors, self-reported health status, productivity, and total medical expenditures. The researchers found that financial incentives increased participation in the program, although only to a point.

Researchers studied the impact of a clinical decision support software system on high-cost imaging orders. They found that clinical decision support reduced the number of high-cost scans targeted by the software but did not change the total number of high-cost scans ordered.

Researchers conducted a randomized evaluation to measure the demand for private tutoring services, estimate how pricing can influence take-up and enrollment in these services, and examine how enrollment and performance differs by gender and age. Researchers found that demand for tutoring services decreases with increased prices, but that higher initial prices could help identify students who are more likely to utilize the services.

To test this theory, researchers evaluated a multi-faceted approach aimed at improving long term income of the ultra-poor in multiple countries, including Yemen.

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 take-up and lowered the average market risk.

Researchers studied the impact of providing personalized and generic information about potential savings via letters and e-mails on enrollee health plan choices.

Researchers sent letters to polling stations announcing smartphone vote-tally audits to evaluate the impact of audits on electoral irregularities such as non-adherence to transparency regulations and falsified vote tallies. Relative to a comparison group, letters increased the number of polling stations posting vote tallies in accordance with the law, reduced fraudulent vote tallies, and decreased the vote share for the incumbent president.