• Aaron Mendelson, Karli Kondo, Cheryl Damberg, Allison Low, Makalapua Motúapuaka, Michele Freeman, Maya O'Neil, Rose Relevo, and Devan Kansagara.
• From VA Portland Health Care System, and Oregon Health & Science University, Portland, Oregon, and RAND Corporation, Santa Monica, California.
• Ann. Intern. Med. 2017 Mar 7; 166 (5): 341-353.

BackgroundThe benefits of pay-for-performance (P4P) programs are uncertain.PurposeTo update and expand a prior review examining the effects of P4P programs targeted at the physician, group, managerial, or institutional level on process-of-care and patient outcomes in ambulatory and inpatient settings.Data SourcesPubMed from June 2007 to October 2016; MEDLINE, PsycINFO, CINAHL, Business Economics and Theory, Business Source Elite, Scopus, Faculty of 1000, and Gartner Research from June 2007 to February 2016.Study SelectionTrials and observational studies in ambulatory and inpatient settings reporting process-of-care, health, or utilization outcomes.Data ExtractionTwo investigators extracted data, assessed study quality, and graded the strength of the evidence.Data SynthesisAmong 69 studies, 58 were in ambulatory settings, 52 reported process-of-care outcomes, and 38 reported patient outcomes. Low-strength evidence suggested that P4P programs in ambulatory settings may improve process-of-care outcomes over the short term (2 to 3 years), whereas data on longer-term effects were limited. Many of the positive studies were conducted in the United Kingdom, where incentives were larger than in the United States. The largest improvements were seen in areas where baseline performance was poor. There was no consistent effect of P4P on intermediate health outcomes (low-strength evidence) and insufficient evidence to characterize any effect on patient health outcomes. In the hospital setting, there was low-strength evidence that P4P had little or no effect on patient health outcomes and a positive effect on reducing hospital readmissions.LimitationFew methodologically rigorous studies; heterogeneous population and program characteristics and incentive targets.ConclusionPay-for-performance programs may be associated with improved processes of care in ambulatory settings, but consistently positive associations with improved health outcomes have not been demonstrated in any setting.Primary Funding SourceU.S. Department of Veterans Affairs.

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