• Alí Duarte-García, Cynthia S Crowson, Rozalina G McCoy, Jeph Herrin, Veronica Lam, Michael S Putman, Joseph S Ross, Eric L Matteson, and Nilay D Shah.
• Division of Rheumatology, Department of Medicine, Mayo Clinic, Rochester, MN; Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN. Electronic address: duarte.ali@mayo.edu.
• Mayo Clin. Proc. 2022 Feb 1; 97 (2): 250260250-260.

ObjectiveTo evaluate the association between pharmaceutical industry payments to rheumatologists and their prescribing behaviors.MethodsA cross-sectional analysis was conducted of Medicare Part B Public Use File, Medicare Part D Public Use File, and Open Payments data for 2013 to 2015. Prescription drugs responsible for 80% of the total Medicare pharmaceutical expenditures in rheumatology were analyzed. We calculated the mean annual drug cost per beneficiary per year, the percentage of rheumatologists who received payments, and the median annual payment per physician per drug per year. Industry payments were categorized as food/beverage and consulting/compensation. Multivariable regression models were used to assess associations between industry payments and both prescribing patterns and prescription drug expenditures.ResultsOf 4822 rheumatologists in the Medicare prescribing databases, 3729 received any payment from a pharmaceutical company during this time frame. Food/beverage payments were associated with an increased proportion of prescriptions for the related drugs (range, 1.5% to 4.5%) and an increased proportion of annual Medicare spending for the related drugs (range, 3% to 23%). For every $100 in food/beverage payments, the probability of prescribing increased (range, 1.5% to 14% for most drugs) and Medicare reimbursements increased (range, 6% to 44% for most drugs). Consulting/compensation payments were associated with an increased proportion of prescriptions (range, 1.2% to 1.6%) and an increased proportion of annual Medicare spending (range, 1% to 2%). For every $1000 in consulting/compensation payments, both the probability of prescribing increased (5% or less for most drugs) and Medicare reimbursements increased (less than 10% for most drugs).ConclusionPayments to rheumatologists by pharmaceutical companies are associated with increased probability of prescribing and Medicare spending.Copyright © 2021 Mayo Foundation for Medical Education and Research. Published by Elsevier Inc. All rights reserved.

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