Randomized Controlled Trial
. 2020 Aug;29(8):664-671. doi: 10.1136/bmjqs-2019-010260. Epub 2020 Jan 6. Cautionary study on the effects of pay for performance on quality of care: a pilot randomised controlled trial using standardised patientsAffiliations
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Randomized Controlled Trial
Cautionary study on the effects of pay for performance on quality of care: a pilot randomised controlled trial using standardised patientsEllen Green et al. BMJ Qual Saf. 2020 Aug.
. 2020 Aug;29(8):664-671. doi: 10.1136/bmjqs-2019-010260. Epub 2020 Jan 6. AffiliationsItem in Clipboard
AbstractBackground: Due to the difficulty of studying incentives in practice, there is limited empirical evidence of the full-impact pay-for-performance (P4P) incentive systems.
Objective: To evaluate the impact of P4P in a controlled, simulated environment.
Design: We employed a simulation-based randomised controlled trial with three standardised patients to assess advanced practice providers' performance. Each patient reflected one of the following: (A) indicated for P4P screenings, (B) too young for P4P screenings, or (C) indicated for P4P screenings, but screenings are unrelated to the reason for the visit. Indication was determined by the 2016 Centers for Medicare and Medicaid Services quality measures.
Intervention: The P4P group was paid $150 and received a bonus of $10 for meeting each of five outcome measures (breast cancer, colorectal cancer, pneumococcal, tobacco use and depression screenings) for each of the three cases (max $300). The control group received $200.
Setting: Learning resource centre.
Participants: 35 advanced practice primary care providers (physician assistants and nurse practitioners) and 105 standardised patient encounters.
Measurements: Adherence to incentivised outcome measures, interpersonal communication skills, standards of care, and misuse.
Results: The Type a patient was more likely to receive indicated P4P screenings in the P4P group (3.82 out of 5 P4P vs 2.94 control, p=0.02), however, received lower overall standards of care under P4P (31.88 P4P vs 37.06 control, p=0.027). The Type b patient was more likely to be prescribed screenings not indicated, but highlighted by P4P: breast cancer screening (47% P4P vs 0% control, p<0.01) and colorectal cancer screening (24% P4P vs 0% control, p=0.03). The P4P group over-reported completion of incentivised measures resulting in overpayment (average of $9.02 per patient).
Limitations: A small sample size and limited variability in patient panel limit the generalisability of findings.
Conclusions: Our findings caution the adoption of P4P by highlighting the unintended consequences of the incentive system.
Keywords: health policy; health services research; pay for performance; performance measures; simulation.
© Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ.
Conflict of interest statementCompeting interests: None declared.
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