Evidence map›Paper›PMID 28249992›Full record

ArticleHeart (British Cardiac Society)2017

Effect of cost sharing on adherence to evidence-based medications in patients with acute coronary syndrome.

Beatriz González López-Valcárcel, Julián Librero, Aníbal García-Sempere, Luz María Peña, Sofía Bauer, Jaume Puig-Junoy, Juan Oliva, Salvador Peiró, Gabriel Sanfélix-Gimeno

Abstract readMulticenter StudyVideo-Audio Media
In one paragraph

Article in Heart (British Cardiac Society), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed.

  1. The cost-effectiveness of value-based insurance design initiatives in managing cardiometabolic diseases: a systematic review.The European journal of health economics : HEPAC : health economics in prevention and care · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Beatriz González López-ValcárcelDepartment of Quantitative Methods in Economics and Management, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.
Julián LibreroHealth Services Research Unit, Center for Public Health Research (CSISP-FISABIO), Valencia, Spain.
Aníbal García-SempereHealth Services Research Unit, Center for Public Health Research (CSISP-FISABIO), Valencia, Spain.
Luz María PeñaCentre for Research in Health and Economics (CRES), Pompeu Fabra University, Barcelona, Spain.
Sofía BauerHealth Services Research Unit, Center for Public Health Research (CSISP-FISABIO), Valencia, Spain.
Jaume Puig-JunoyCentre for Research in Health and Economics (CRES), Pompeu Fabra University, Barcelona, Spain.
Juan OlivaDepartment of Economic Analysis, University of Castilla-La Mancha, Toledo, Spain.
Salvador PeiróHealth Services Research Unit, Center for Public Health Research (CSISP-FISABIO), Valencia, Spain.
Gabriel Sanfélix-GimenoHealth Services Research Unit, Center for Public Health Research (CSISP-FISABIO), Valencia, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesCost-sharing scheme for pharmaceuticals in Spain changed in July 2012. Our aim was to assess the impact of this change on adherence to essential medication in patients with acute coronary syndrome (ACS) in the region of Valencia.

methodsPopulation-based retrospective cohort of 10 563 patients discharged alive after an ACS in 2009-2011. We examined a control group (low-income working population) that did not change their coinsurance status, and two intervention groups: pensioners who moved from full coverage to 10% coinsurance and middle-income to high-income working population, for whom coinsurance rose from 40% to 50% or 60%. Weekly adherence rates measured from the date of the first prescription. Days with available medication were estimated by linking prescribed and filled medications during the follow-up period.

resultsCost-sharing change made no significant differences in adherence between intervention and control groups for essential medications with low price and low patient maximum coinsurance, such as antiplatelet and beta-blockers. For costlier ACE inhibitor or an angiotensin II receptor blocker (ACEI/ARB) and statins, it had an immediate effect in the proportion of adherence in the pensioner group as compared with the control group (6.8% and 8.3% decrease of adherence, respectively, p<0.01 for both). Adherence to statins decreased for the middle-income to high-income group as compared with the control group (7.8% increase of non-adherence, p<0.01). These effects seemed temporary.

conclusionsCoinsurance changes may lead to decreased adherence to proven, effective therapies, especially for higher priced agents with higher patient cost share. Consideration should be given to fully exempt high-risk patients from drug cost sharing.

Indexed as

Drug CostsMedication AdherencePatient ComplianceAcute Coronary SyndromeAdrenergic beta-AntagonistsAdultAgedAngiotensin-Converting Enzyme InhibitorsCost SharingFemaleHumansHydroxymethylglutaryl-CoA Reductase InhibitorsMaleMiddle AgedRetrospective StudiesAdrenergic beta-AntagonistsAngiotensin-Converting Enzyme InhibitorsHydroxymethylglutaryl-CoA Reductase Inhibitorsacute coronary syndromecost-sharingDifference-indifferencesmedication adherence

Identifiers

PMID28249992
PMCPMC5566093

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Registered trials

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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.