Evidence map›Paper›PMID 26908412›Full record

ArticleJournal of the American Heart Association2016

Effect of Adherence to Oral Anticoagulants on Risk of Stroke and Major Bleeding Among Patients With Atrial Fibrillation.

Xiaoxi Yao, Neena S Abraham, G Caleb Alexander, William Crown, Victor M Montori, Lindsey R Sangaralingham, Bernard J Gersh, Nilay D Shah, Peter A Noseworthy

Open access · goldAbstract read
In one paragraph

Article in Journal of the American Heart Association, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 189 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
189citing papers in PubMed, 8 pooled it
47.8field-weighted citation impact, top 1% 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

189 citing papers in PubMed, 8 syntheses or guidelines pooled it, 450 citations in OpenAlex.

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  8. Benefits and Risks Associated with Long-term Oral Anticoagulation after Successful Atrial Fibrillation Catheter Ablation: Systematic Review and Meta-analysis.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
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  16. Educational Impact on Apixaban Adherence in Atrial Fibrillation (the AEGEAN STUDY): A Randomized Clinical Trial.American journal of cardiovascular drugs : drugs, devices, and other interventions · 2020
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129 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 1 country.

Xiaoxi YaoRobert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN yao.xiaoxi@mayo.edu.
Neena S AbrahamRobert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Scottsdale, AZ Division of Health Care Policy and Research, Department of Health Services Research, Mayo Clinic, Rochester, MN.
G Caleb AlexanderDivision of General Internal Medicine, Johns Hopkins School of Medicine, Baltimore, MD Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health and Center for Drug Safety and Effectiveness, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD.
William CrownOptum Labs, Cambridge, MA.
Victor M MontoriDivision of Health Care Policy and Research, Department of Health Services Research, Mayo Clinic, Rochester, MN.
Lindsey R SangaralinghamRobert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN.
Bernard J GershHeart Rhythm Section, Cardiovascular Diseases, Mayo Clinic, Rochester, MN.
Nilay D ShahRobert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN Division of Health Care Policy and Research, Department of Health Services Research, Mayo Clinic, Rochester, MN Optum Labs, Cambridge, MA.
Peter A NoseworthyRobert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN Heart Rhythm Section, Cardiovascular Diseases, Mayo Clinic, Rochester, MN.
Mayo Clinic in Arizona · USMayo Clinic · USWinnMed · USJohns Hopkins University · USOptum (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn comparison to warfarin, non-vitamin K antagonist oral anticoagulants (NOACs) have the advantages of ease of dosing, fewer drug interactions, and lack of need for ongoing monitoring. We sought to evaluate whether these advantages translate to improved adherence and whether adherence is associated with improved outcomes in patients with atrial fibrillation. METHODS AND

resultsWe performed a retrospective cohort analysis by using a large US commercial insurance database to identify 64 661 patients with atrial fibrillation who initiated warfarin, dabigatran, rivaroxaban, or apixaban treatment between November 1, 2010, and December 31, 2014. During a median of 1.1 y of follow-up, 47.5% of NOAC patients had a proportion of days covered of ≥80%, compared with 40.2% in warfarin patients (P<0.001). Patients with CHA2DS2-VASc (risk based on the presence of congestive heart failure, hypertension age 65-74 y, age ≥75 y, diabetes mellitus, prior stroke or transient ischemic attack, vascular disease, sex category) score ≥4 were at increased risk of stroke when they were not taking anticoagulation ≥1 month versus <1 week (1-3 months: hazard ratio [HR] 1.96, 3-6 months: HR 2.64, ≥6 months: HR 3.66; all P<0.001). Patients with CHA2DS2-VASc score 2 or 3 were at increased risk of stroke when they were not taking anticoagulation ≥6 months (HR 2.73, P<0.001). In these patients with CHA2DS2-VASc score ≥2, nonadherence was not associated with intracranial hemorrhage. Among patients with CHA2DS2-VASc score 0 or 1, time not taking anticoagulation was not associated with stroke, but not taking anticoagulation ≥3 months was associated with a significant reduction of bleeding.

conclusionsAdherence to anticoagulation is poor in practice and may be modestly improved with NOACs. Adherence to therapy appears to be most important in patients with CHA2DS2-VASc score ≥2, whereas the benefits of anticoagulation may not outweigh the harms in patients with CHA2DS2-VASc score 0 or 1.

Indexed as

Medication AdherenceAdministration, OralAdolescentAdultAgedAged, 80 and overAnticoagulantsAtrial FibrillationBlood CoagulationDatabases, FactualDrug Administration ScheduleFemaleHemorrhageHumansMaleMiddle AgedAnticoagulantsadherencebleedingCHA2DS2‐VAScnon–vitamin K antagonist oral anticoagulantsstroke

Identifiers

PMID26908412
PMCPMC4802483
OpenAlexW2281540926

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.