• Am J Manag Care · Jun 2022

    Observational Study

    Financial incentives tied to Medicare star ratings: impact on influenza vaccination uptake in Medicare beneficiaries.

    • Bruce Stuart, F Ellen Loh, Sachin Kamal-Bahl, Jeffrey Vietri, Daniel Bakken, Justin Puckett, and Jalpa A Doshi.
    • COVIA Health Solutions, 115 Meadow View Ln, Lansdale, PA 19446. Email: sachin@coviahealthsolutions.com.
    • Am J Manag Care. 2022 Jun 1; 28 (6): 273-280.

    ObjectivesTo evaluate the impact of the star rating bonus payment policy on annual influenza vaccination rates before and after the policy was adopted for Medicare Advantage (MA) plans in 2012.Study DesignObservational study using data from the Medicare Current Beneficiary Survey from 2007 to 2015 to test whether the bonus payment policy led to higher flu vaccination rates in MA prescription drug (MAPD) plans vs fee-for-service prescription drug plans (PDPs), which were ineligible for bonus payments.MethodsMean preperiod (2007-2011) and postperiod (2012-2015) influenza vaccination rates were compared for enrollees in both types of plans using descriptive and multivariate difference-in-difference (DID) equations. The experimental effect of the MA bonus payment policy was estimated as the interaction between plan type (MAPD plan vs PDP) and period (pre- vs post period) controlling for the main effects of plan type (MAPD vs PDP), timing of the observation (pre- vs post period), and other potential confounders.ResultsThe study sample included 40,369 person-years of data in the preperiod and 27,703 person-years of data in the post period. Vaccination rates increased by 3.8% in MAPD plans compared with 2.7% in PDPs, leading to a relative MAPD-favored difference that was nonsignificant (P = .31). However, the effect was statistically significant (odds ratio [OR], 1.12; P = .03) in the main multivariate DID model. A larger relative difference was observed among beneficiaries 75 years and older (OR, 1.18; P = .03).ConclusionsThe Medicare bonus payment policy led to a small increase in beneficiaries' flu vaccination rates, suggesting that expanding the star measure set could be an effective way to increase uptake for other recommended adult vaccines.

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