SynthesisJournal of the American Geriatrics Society2011
Medicare Part D's effect on the under- and overuse of medications: a systematic review.
Synthesis in Journal of the American Geriatrics Society, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 5 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, 5 syntheses or guidelines pooled it, 37 citations in OpenAlex.
- Pooled it
- A systematic umbrella review of the association of prescription drug insurance and cost-sharing with drug use, health services use, and health.BMC health services research · 2022Pooled it
- Pharmaceutical policies: effects of cap and co-payment on rational use of medicines.The Cochrane database of systematic reviews · 2015Pooled it
- Prescription drug insurance coverage and patient health outcomes: a systematic review.American journal of public health · 2015Pooled it
- Medicare part D and long-term care: a systematic review of quantitative and qualitative evidence.Drugs & aging · 2013Pooled it
- Drug Coverage Policy and Legacy Prescribing: A Cross-Sectional Analysis in British Columbia.Health science reports · 2026Article
- Economic Barriers to Antiretroviral Therapy in Nursing Homes.Journal of the American Geriatrics Society · 2020Article
- Effect of total exemption from medical service co-payments on potentially inappropriate medication use among elderly ambulatory patients in a single center in Japan: a retrospective cross-sectional study.BMC research notes · 2018Article
- Characteristics of the use of cold combination products among older ambulatory patients at the National Hospital Organization Tochigi Medical Center in Japan: a retrospective single-center observational study.BMC research notes · 2017Observational
- Evidence for overuse of medical services around the world.Lancet (London, England) · 2017Review
- National Trends in Antidepressant, Benzodiazepine, and Other Sedative-Hypnotic Treatment of Older Adults in Psychiatric and Primary Care.The Journal of clinical psychiatry · 2017Article
- Economic burden of hospitalizations of Medicare beneficiaries with heart failure.Risk management and healthcare policy · 2017Article
- The Present and the Future of Cost-Related Non-Adherence in Medicare Part D.Journal of general internal medicine · 2015Article
- Gastroprotective agent underuse in high-risk older daily nonsteroidal anti-inflammatory drug users over time.Journal of the American Geriatrics Society · 2014Observational
- Brand-name prescription drug use among Veterans Affairs and Medicare Part D patients with diabetes: a national cohort comparison.Annals of internal medicine · 2013Article
- Adverse clinical events among medicare beneficiaries using antipsychotic drugs: linking health insurance benefits and clinical needs.Medical care · 2013Article
- The impact of Medicare prescription drug coverage on the use of antidementia drugs.BMC geriatrics · 2013Article
- Article
- Geographic variation in HMG-CoA reductase inhibitor use in dialysis patients.Journal of general internal medicine · 2012Article
- Reconsideration of key articles regarding medication-related problems in older adults from 2011.The American journal of geriatric pharmacotherapy · 2012Review
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 at 2 institutions in 1 country.
Funding
Abstract
objectivesTo evaluate the literature regarding the effect of Medicare Part D on the under- and overuse of specific medications and corresponding health outcomes.
designSystematic review.
settingMedline search of the peer-reviewed literature from January 1, 2006, to October 8, 2010.
participantsMedicare beneficiaries who obtained drug insurance from the Part D program. MEASUREMENTS: The review evaluated changes in the use of specific drugs or drug classes after implementation of Part D, as described in original, peer-reviewed articles.
resultsNineteen articles met inclusion criteria. Part D's implementation was associated with greater use of essential medications such as clopidogrel and statins, especially in beneficiaries who had been previously uninsured, but increases in inappropriate antibiotic use for the treatment of acute respiratory tract infections and increases in claims for the often overused proton pump inhibitor drug class were also observed. In the Part D transition period, dually eligible beneficiaries' drug use remained largely unchanged. When beneficiary cost sharing increased in the coverage gap, use of essential and overused medications declined.
conclusionIncreasing drug coverage led to greater use of underused essential medications and inappropriate, or overused, medications under Medicare Part D. Despite efforts to have it do so, the Part D benefit did not sufficiently discriminate between essential and nonessential medication use.
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.