Evidence map›Paper›PMID 25125079›Full record

Observational studyBMC cardiovascular disorders2014

Clopidogrel discontinuation within the first year after coronary drug-eluting stent implantation: an observational study.

Troels Thim, Martin Berg Johansen, Gro Egholm Chisholm, Morten Schmidt, Anne Kaltoft, Henrik Toft Sørensen, Leif Thuesen, Steen Dalby Kristensen, Hans Erik Bøtker, Lars Romer Krusell and 5 more

Abstract readObservational Study
In one paragraph

Observational study in BMC cardiovascular disorders, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed.

  1. Trial
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  3. American Society for Gastrointestinal Endoscopy guideline on gastrostomy feeding tubes: methodology and review of evidence.VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy · 2025
    Article
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  5. Early Discontinuation of P2YJournal of the American Heart Association · 2019
    Observational
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  7. Observational
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  10. Observational
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors.

Troels Thim
Martin Berg Johansen
Gro Egholm Chisholm
Morten Schmidt
Anne Kaltoft
Henrik Toft Sørensen
Leif Thuesen
Steen Dalby Kristensen
Hans Erik Bøtker
Lars Romer Krusell
Jens Flensted Lassen
Per Thayssen
Lisette Okkels Jensen
Hans-Henrik Tilsted
Michael MaengDepartment of Cardiology, Aarhus University Hospital, Aarhus, Denmark. michael.maeng@ki.au.dk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe impact of adherence to the recommended duration of dual antiplatelet therapy after first generation drug-eluting stent implantation is difficult to assess in real-world settings and limited data are available.

methodsWe followed 4,154 patients treated with coronary drug-eluting stents in Western Denmark for 1 year and obtained data on redeemed clopidogrel prescriptions and major adverse cardiovascular events (MACE, i.e., cardiac death, myocardial infarction, or stent thrombosis) from medical databases.

resultsDiscontinuation of clopidogrel within the first 3 months after stent implantation was associated with a significantly increased rate of MACE at 1-year follow-up (hazard ratio (HR) 2.06; 95% confidence interval (CI): 1.08-3.93). Discontinuation 3-6 months (HR 1.29; 95% CI: 0.70-2.41) and 6-12 months (HR 1.29; 95% CI: 0.54-3.07) after stent implantation were associated with smaller, not statistically significant, increases in MACE rates. Among patients who discontinued clopidogrel, MACE rates were highest within the first 2 months after discontinuation.

conclusionsDiscontinuation of clopidogrel was associated with an increased rate of MACE among patients treated with drug-eluting stents. The increase was statistically significant within the first 3 months after drug-eluting stent implantation but not after 3 to 12 months.

Indexed as

Drug-Eluting StentsMedication AdherenceAgedClopidogrelCoronary ThrombosisDenmarkDrug Administration ScheduleDrug PrescriptionsFemaleHumansMaleMiddle AgedMyocardial InfarctionPercutaneous Coronary InterventionPlatelet Aggregation InhibitorsRegistriesClopidogrelPlatelet Aggregation InhibitorsTiclopidine

Identifiers

PMID25125079
PMCPMC4135343

What OpenQuestion holds

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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.