Evidence map›Paper›PMID 26270530›Full record

SynthesisPloS one2015

Clopidogrel and Aspirin versus Aspirin Alone for Stroke Prevention: A Meta-Analysis.

Shuai Tan, Xiaojuan Xiao, Hanyu Ma, Zhaohui Zhang, Jiangbo Chen, Lei Ding, Shenping Yu, Rulin Xu, Shiliang Yang, Xinyi Huang and 1 more

Open access · goldAbstract readComparative StudyMeta-AnalysisReview
In one paragraph

Synthesis in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 3 pooled it
1.5field-weighted citation impact, top 16% 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

10 citing papers in PubMed, 3 syntheses or guidelines pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Dry Needling and Antithrombotic Drugs.Pain research & management · 2022
    Review
  6. Sex differences in stroke co-morbidities.Experimental neurology · 2020
    Review
  7. Article
  8. Article
  9. Article
  10. Article
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

11 authors at 2 institutions in 1 country.

Shuai TanDepartment of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Xiaojuan XiaoDepartment of Radiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Hanyu MaDepartment of Pathology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Zhaohui ZhangDepartment of Pancreato-Biliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Jiangbo ChenDepartment of Interventional Radiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Lei DingDepartment of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Shenping YuDepartment of Radiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Rulin XuDepartment of Cardiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Shiliang YangDepartment of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Xinyi HuangDepartment of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Hua HongDepartment of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
The First Affiliated Hospital, Sun Yat-sen University · CNSun Yat-sen University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeAntiplatelet therapy is widely used for the primary or secondary prevention of stroke. Drugs like clopidogrel have emerged as alternatives for traditional antiplatelet therapy, and dual therapy with clopidogrel and aspirin is of particular interest. We conducted this meta-analysis to systematically review studies about dual therapy comparing monotherapy with aspirin alone.

methodsRandomized controlled trials were searched in PubMed (1966-May, 2015), EMBASE (1947-May, 2015), the Cochrane Central Register of Controlled Trials (CENTRAL) (1948-May, 2015), WHO International Clinical Trial (ICTRP) (2004-May, 2015), China Biology Medicine disc (CBM disc) (1978-May, 2015) and were included into the final analysis according to the definite inclusion criteria mentioned in the study selection section. Risk ratio (RR) was pooled with 95% confidence interval (CI) for dichotomous data. The heterogeneity was considered significant if the χ2 test was significant (P value < 0.10) or the I2 > 50.00%. Subgroup analyses were carried out on the long and short time periods, the race and region.

resultsWe included 5 studies involving 24,084 patients. A pooled analysis showed that dual therapy with clopidogrel and aspirin had a lower stroke incidence than monotherapy in both the short term and long term (RR = 0.69, 95% CI: 0.59-0.82, P <0.05; RR = 0.84, 95% CI: 0.72-0.98, P = 0.03, respectively). With regard to safety, dual therapy had a higher risk of bleeding than monotherapy for both periods (RR = 1.51, 95% CI: 1.03-2.23, P = 0.04; RR = 1.54, 95% CI: 1.32-1.79, P<0.05, respectively).

conclusionsDual therapy with clopidogrel and aspirin could be a preferable choice to prevent stroke in patients who have had a previous stroke or transient ischemic attack, as well as those who are at high risk for stroke. And the effect of dual therapy seems to be more obvious for short-term. However, it is associated with a higher risk of bleeding.

Indexed as

AspirinClopidogrelFemaleHemorrhageHumansMaleStrokeTiclopidineAspirinClopidogrelTiclopidine

Identifiers

PMID26270530
PMCPMC4536208
OpenAlexW2127179883

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.