Evidence map›Paper›PMID 30852971›Full record

SynthesisStroke2019

Optimal Duration of Aspirin Plus Clopidogrel After Ischemic Stroke or Transient Ischemic Attack.

Hammad Rahman, Safi U Khan, Fahad Nasir, Tehseen Hammad, Michael A Meyer, Edo Kaluski

Open access · bronzeAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Stroke, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
3.4field-weighted citation impact, top 7% of its field
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, 2 syntheses or guidelines pooled it, 41 citations in OpenAlex.

  1. Pooled it
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  6. The Japanese Society of Hypertension Guidelines for the management of elevated blood pressure and hypertension 2025 (JSH2025).Hypertension research : official journal of the Japanese Society of Hypertension · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 2 countries.

Hammad RahmanFrom the Department of Medicine (H.R., F.N., E.K.), Guthrie Health System/Robert Packer Hospital, Sayre, PA.
Safi U KhanDepartment of Medicine, West Virginia University, Morgantown (S.U.K.).
Fahad NasirFrom the Department of Medicine (H.R., F.N., E.K.), Guthrie Health System/Robert Packer Hospital, Sayre, PA.
Tehseen HammadDepartment of Medicine, Services Hospital, Lahore, Pakistan (T.H.).
Michael A MeyerDivision of Neurology (M.A.M.), Guthrie Health System/Robert Packer Hospital, Sayre, PA.
Edo KaluskiFrom the Department of Medicine (H.R., F.N., E.K.), Guthrie Health System/Robert Packer Hospital, Sayre, PA.
Guthrie Robert Packer Hospital · USRutgers, The State University of New Jersey · USServices Hospital · PKWest Virginia University · US

Funding

West Virginia IDEA-CTRU54GM104942 · NIGMS · WEST VIRGINIA UNIVERSITY · PI Laura F. Gibson · 2012 to 2026
$81.0M
NIGMS NIH HHS U54 GM104942
6 · The paper itself

Abstract

Background and Purpose- The role of aspirin plus clopidogrel (A+C) therapy compared with aspirin monotherapy in patients presenting with acute ischemic stroke (IS) or transient ischemic attack remains uncertain. We conducted this study to determine the optimal period of efficacy and safety of A+C compared with aspirin monotherapy. Methods- Ten randomized controlled trials (15 434 patients) were selected using MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials (CENTRAL) (inception June 2018) comparing A+C with aspirin monotherapy in patients with transient ischemic attack or IS. The primary efficacy outcome was recurrent IS, and the primary safety outcome was major bleeding. The secondary outcomes were major adverse cardiovascular events (composite of stroke, myocardial infarction, and cardiovascular mortality) and all-cause mortality. We stratified analysis based on the short- (≤1 month), intermediate- (≤3 month), and long-term (>3 month) A+C therapy. Effects were estimated as relative risk (RR) with 95% CI. Results- A+C significantly reduced the risk of recurrent IS at short-term (RR, 0.53; 95% CI, 0.37-0.78) and intermediate-term (RR, 0.72; 95% CI, 0.58-0.90) durations. Similarly, major adverse cardiovascular event was significantly reduced by short-term (RR, 0.68; 95% CI, 0.60-0.78) and intermediate-term (RR, 0.76; 95% CI, 0.61-0.94) A+C therapy. However, long-term A+C did not yield beneficial effect in terms of recurrent IS (RR, 0.81; 95% CI, 0.63-1.04) and major adverse cardiovascular events (RR, 0.87; 95% CI, 0.71-1.07). Intermediate-term (RR, 2.58; 95% CI, 1.19-5.60) and long-term (RR, 1.87; 95% CI, 1.36-2.56) A+C regimens significantly increased the risk of major bleeding as opposed to short-term A+C (RR, 1.82; 95% CI, 0.91-3.62). Excessive all-cause mortality was limited to long-term A+C (RR, 1.45; 95% CI, 1.10-1.93). Conclusions- Short-term A+C is more effective and equally safe in comparison to aspirin alone in patients with acute IS or transient ischemic attack.

Indexed as

AspirinBrain IschemiaClopidogrelDrug Administration ScheduleDrug Therapy, CombinationHumansIschemic Attack, TransientSecondary PreventionStrokeAspirinClopidogrelaspirinclopidogrelstroketransient ischemic attack

Identifiers

PMID30852971
PMCPMC7457746
OpenAlexW2931102071

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.