Dataset Information

Competition and health plan quality in the Medicare Advantage market.

ABSTRACT: OBJECTIVE:To examine the relationship between insurer market structure, health plan quality, and health insurance premiums in the Medicare Advantage (MA) program. DATA SOURCES/STUDY SETTING:Administrative data files from the Centers for Medicare and Medicaid Services, along with other secondary data sources. STUDY DESIGN:Trends in MA market concentration from 2008 to 2017 are presented, alongside logistic and linear regression models examining MA plan quality and premiums as a function of insurer market structure for 2011. DATA COLLECTION/EXTRACTION METHODS:Data are publicly available. PRINCIPAL FINDINGS:MA plans that tend to operate in more concentrated MA markets have a higher predicted probability of receiving a high-quality health plan rating. Operating in more concentrated MA markets was also found to be associated with higher premiums. Among plans that tend to operate in very concentrated MA markets, high-quality MA plans were associated with premiums as much as two times higher than premiums associated with lower-quality plans. CONCLUSIONS:Any policies directed at enhancing insurer competition should consider implications for health plan quality, which may be very different than the implications for enrollee premiums.

SUBMITTER: Adrion ER

PROVIDER: S-EPMC6736911 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Competition and health plan quality in the Medicare Advantage market.

Adrion Emily R ER

Health services research 20190805 5

<h4>Objective</h4>To examine the relationship between insurer market structure, health plan quality, and health insurance premiums in the Medicare Advantage (MA) program.<h4>Data sources/study setting</h4>Administrative data files from the Centers for Medicare and Medicaid Services, along with other secondary data sources.<h4>Study design</h4>Trends in MA market concentration from 2008 to 2017 are presented, alongside logistic and linear regression models examining MA plan quality and premiums a ...[more]

PMID: 31385292

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Project description:ImportanceHealth insurance literacy helps individuals make informed choices. However, evidence suggests that Medicare beneficiaries experience low health insurance literacy, leading to high-cost or poor-quality coverage choices.ObjectiveTo examine how health insurance literacy was associated with coverage choices between traditional Medicare (TM) and Medicare Advantage (MA), as well as within MA.Design, setting, and participantsThis cross-sectional study included 6627 TM and MA enrollees, using data from the 2015-2016 Medicare Current Beneficiary Survey. Data analyses were conducted between May 1 and June 30, 2021.ExposuresThree self-reported measures of health insurance literacy (presence of information to make an informed comparison, ease in reviewing and comparing coverage options, and annual review and comparison of coverage options).Main outcomes and measuresEnrollment in TM vs MA and enrollment in an MA plan with different characteristics (star rating, monthly plan premium, in-network maximum out-of-pocket limit, plan type, and provision of supplemental benefits).ResultsWe included 6627 Medicare beneficiaries (3578 women [54.0%]; mean [SD] age, 75.13 [7.12] years). A total of 77 individuals were Asian (1.2%), 696 were Black (10.5%), 488 were Hispanic (7.4%), 5277 were non-Hispanic White (79.6%), and 225 (3.4%) were single races not of Hispanic origin (including American Indian or Alaska Native and Native Hawaiian) or were 2 or more races. Medicare Advantage enrollment was higher among individuals with higher health insurance literacy than those with lower health insurance literacy, especially for those who reviewed or compared coverage options annually than among those who did not (38.0%; 95% CI, 36.0%-40.1% vs 27.8%; 95% CI, 25.8%-29.7%). Among MA beneficiaries, those who reviewed or compared coverage options annually were more likely to enroll in plans with 4 to 4.5 stars and plans with monthly premiums of $1 to $50 by 4.6 percentage points (95% CI, 0.1-9.2 percentage points) and 4.8 percentage points (95% CI, 0.6-9.0 percentage points), respectively. However, enrollment in plans with 5 stars was 3.8 percentage points lower (95% CI, -5.8 to -1.9 percentage points) among individuals who reviewed or compared coverage options annually than among those who did not. Among individuals with low socioeconomic status, the likelihood of reviewing or comparing coverage options annually was lower for those with Medicare and Medicaid dual eligibility than for those without it (odds ratio, 0.79; 95% CI, 0.63-0.99).Conclusions and relevanceResults of this study suggest that higher health insurance literacy-particularly, annual review and comparison of coverage choices-is associated with higher MA enrollment and choice of a particular MA plan. Policy makers should develop programs to encourage frequent review and comparison of coverage options for informed decision making.

Project description:ImportanceVarious policy proposals would reduce federal payments to Medicare Advantage (MA) plans. However, it is unclear whether payment reductions would compromise beneficiary access to the MA program.ObjectiveTo quantify the association between MA payment reductions under the Affordable Care Act (ACA) and MA enrollment growth.Design, setting, and participantsThis retrospective cohort study examined the MA market before and after the ACA, which mandated cuts to MA benchmark payment rates. Using 2008 to 2019 county-level enrollment and payment data, a difference-in-differences analysis was conducted comparing MA enrollment changes between counties with larger vs smaller benchmark reductions, before vs after the ACA.Main outcomes and measuresThe primary outcome was the MA enrollment rate, defined as the proportion of a county's Medicare beneficiaries enrolled in MA. A secondary analysis examined MA plan payments per member per month.ResultsAmong 3138 counties with 37 639 county-year observations, ACA-induced benchmark cuts were sizeable and varied, ranging from 0% to 42.9% (mean [SD], 5.9% [6.6%]). Counties with benchmark cuts above the 75th percentile had population-weighted average benchmark cuts of 14.9% compared with 4.4% in other counties. In the 8 years following the ACA, there was no differential change in MA enrollment between counties with larger vs smaller benchmark cuts (difference-in-differences estimate, 0.02 [95% CI, -1.18 to 1.21] percentage points; P = .98). Plan payments differentially fell in counties with larger benchmark cuts by $78.35 (95% CI, $62.21-$94.48) per member per month (P < .001).Conclusion and relevanceThis cohort study found no evidence that the MA benchmark and ensuing payment cuts imposed by the ACA were associated with reduced MA enrollment, compromising access to MA. This evidence can inform ongoing policy debates regarding the growth of MA, concerns about excess payments to MA plans, and proposed Medicare reforms, including further reductions in MA payments.

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Dataset Information

Competition and health plan quality in the Medicare Advantage market.

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Competition and health plan quality in the Medicare Advantage market.

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