ArticleHealth services research2010
Impact of Medicare Part D on Medicare-Medicaid dual-eligible beneficiaries' prescription utilization and expenditures.
Article in Health services research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 4 of them syntheses that pooled it.
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
21 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Pharmaceutical policies: effects of regulating drug insurance schemes.The Cochrane database of systematic reviews · 2022Pooled it
- Medicare Part D's Effects on Drug Utilization and Out-of-Pocket Costs: A Systematic Review.Health services research · 2017Pooled it
- Pharmaceutical policies: effects of cap and co-payment on rational use of medicines.The Cochrane database of systematic reviews · 2015Pooled it
- Changes in drug use and out-of-pocket costs associated with Medicare Part D implementation: a systematic review.Journal of the American Geriatrics Society · 2010Pooled it
- Racial and Ethnic Inequities in Managing Prescription Drug Costs Among Older Adults in Medicare.Journal of racial and ethnic health disparities · 2026Article
- Estimating price elasticities of demand for pain relief drugs: evidence from Medicare Part D.International journal of health economics and management · 2024Article
- Prevalence and Persistence of Cost-Related Medication Nonadherence Among Medicare Beneficiaries at High Risk of Hospitalization.JAMA network open · 2021Article
- The impact of Medicare part D prescription drug benefit program on generic drug prescription: A study in long-term care facilities.Medicine · 2019Observational
- The impact of Medicare part D on income-related inequality in pharmaceutical expenditure.International journal for equity in health · 2019Article
- Changes in Prescription and Over-the-Counter Medication and Dietary Supplement Use Among Older Adults in the United States, 2005 vs 2011.JAMA internal medicine · 2016Article
- Impact of Medicare Part D on Racial and Ethnic Minorities.Diversity and equality in health and care · 2016Article
- Effects of eliminating drug caps on racial differences in antidepressant use among dual enrollees with diabetes and depression.Clinical therapeutics · 2015Article
- Changes in drug coverage generosity and untreated serious mental illness: transitioning from Medicaid to Medicare Part D.JAMA psychiatry · 2015Article
- Patterns of prescription drug expenditures and medication adherence among medicare part D beneficiaries with and without the low-income supplement.BMC health services research · 2014Article
- Changes in use of lipid-lowering medications among black and white dual enrollees with diabetes transitioning from Medicaid to Medicare Part D drug coverage.Medical care · 2014Article
- Has Medicare Part D reduced racial/ethnic disparities in prescription drug use and spending?Health services research · 2014Article
- Responses to Medicare drug costs among near-poor versus subsidized beneficiaries.Health services research · 2013Article
- Just because it's low cost doesn't mean it's accessible.Journal of general internal medicine · 2012Article
- Ethnic disparities in adherence to antihypertensive medications of medicare part D beneficiaries.Journal of the American Geriatrics Society · 2012Article
- Medicare part D and changes in prescription drug use and cost burden: national estimates for the Medicare population, 2000 to 2007.Medical care · 2011Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo examine the effect of Part D on 65-78-year-old noninstitutionalized dual eligibles' prescription utilization and expenditures. DATA SOURCE: Random sample of unique pharmacy customers of a national retail pharmacy chain who filled at least one prescription during both 2005 and 2006. For each subject, we obtained claims data for every prescription filled between January 1, 2005, and April 31, 2007. STUDY
designGeneralized estimating equations were used to examine the experience of a "treatment" group (dual eligibles between 65 and 78 years on January 1, 2005) with that of a "control" group (near-elderly patients with Medicaid coverage between 60 and 63 years on January 1, 2005) during the first 18 months after Part D implementation. PRINCIPAL
findingsExpenditures for the treatment and control groups tracked each other closely in the pre-Part D period. Immediately following the implementation of Part D, expenditures for both groups decreased and then leveled off. There were no significant changes in trends in the dual eligibles' out-of-pocket expenditures, total monthly expenditures, pill-days, or total number of prescriptions due to Part D.
conclusionsWe find no evidence that Part D adversely affected pharmaceutical utilization or out-of-pocket expenditures of dual eligibles during the transition period, nor during the 16 months subsequent to Part D implementation.
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Registered trials
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