ArticleHealth affairs (Project Hope)2024
Medicare Part D Protected-Class Policy Is Associated With Lower Drug Rebates.
Article in Health affairs (Project Hope), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
5 citing papers in PubMed.
- Coverage Generosity of Novel Antirheumatic Drugs in Medicare Advantage and Stand-Alone Part D Plans.Arthritis & rheumatology (Hoboken, N.J.) · 2026Article
- Trends in prescription drug coverage restrictions in Medicare, Medicaid, and commercial insurance plans, 2011-2019.Health affairs scholar · 2026Article
- Drug Prices, Rebates, and Health Plan Coverage Restrictions.JAMA network open · 2026Article
- Changes in Medicare Part D Plan Designs After the Inflation Reduction Act.JAMA internal medicine · 2025Article
- What drug characteristics explain the wide range of manufacturer rebates?Health affairs scholar · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
Medicare Part D does not allow plans to exclude drugs in six protected classes from their formularies, which may limit plans' ability to negotiate rebates and lead to higher spending. We estimated the association between protected-class status, US-level estimated rebates, and formulary coverage during the period 2011-19. We found that protected classes indeed had significantly lower exclusion rates in Medicare Part D during this period relative to nonprotected classes, and this difference was larger than the corresponding difference in commercial plans. US-level average rebates grew 22.5 percentage points less in protected than in nonprotected classes during 2011-19, a period when formulary exclusions increased. Relative to nonprotected classes, US-level average rebates in protected classes were especially low among drugs with high Medicare market share. These results suggest that Medicare Part D protected-class policy may reduce rebates.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.