Association Between Medicare Advantage Plan Star Ratings and Enrollment

JAMA: January 16, 2013

Importance  The US Centers for Medicare & Medicaid Services publishes star ratings reflecting Medicare Advantage plan quality to inform enrollment decisions.

Objective  To assess the association between publicly reported Medicare Advantage plan quality ratings and enrollment.

Design, Setting, and Participants  Cross-sectional study of 2011 Medicare Advantage enrollments among 952 352 first-time enrollees and 322 699 enrollees switching plans.

Main Outcome Measure  Association between star ratings and enrollment was modeled using conditional logit regression, controlling for beneficiary and plan characteristics. Read More