Evidence map›Paper›PMID 34244745›Full record

ArticleEuropean heart journal. Quality of care & clinical outcomes2022

Effectiveness and safety of non-vitamin K antagonist oral anticoagulants and warfarin in atrial fibrillation: a Scandinavian population-based cohort study.

Sigrun Halvorsen, Søren P Johnsen, Morten Madsen, Marie Linder, Gerhard Sulo, Waleed Ghanima, Gunnar Gislason, Stefan H Hohnloser, Aaron Jenkins, Faris Al-Khalili and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in European heart journal. Quality of care & clinical outcomes, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 3 pooled it
1.4field-weighted citation impact, top 17% 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

9 citing papers in PubMed, 3 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Oral Anticoagulation Therapy in Atrial Fibrillation Patients with Intermediate Stroke Risk: A Systematic Review and Meta-Analysis.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    Pooled it
  4. Observational
  5. Article
  6. Review
  7. Article
  8. Article
  9. 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

12 authors at 11 institutions in 5 countries.

Sigrun HalvorsenDepartment of Cardiology, Oslo University Hospital Ullevål, PO Box 4956, Nydalen, NO-0424 Oslo, Norway.
Søren P JohnsenDanish Center for Clinical Health Services Research, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.
Morten MadsenDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
Marie LinderCentre for Pharmacoepidemiology, Karolinska Institutet, Stockholm, Sweden.
Gerhard SuloCentre for Disease Burden, Norwegian Institute of Public Health, Bergen, Norway.ORCID 0000-0001-7561-7644
Waleed GhanimaInstitute of Clinical Medicine, University of Oslo, Oslo, Norway.
Gunnar GislasonDepartment of Cardiology, Copenhagen University Hospital Herlev and Gentofte, 2900 Hellerup, Denmark.
Stefan H HohnloserDepartment of Cardiology, J.W. Goethe University, Frankfurt, Germany.
Aaron JenkinsPfizer Ltd, Tadworth, UK.
Faris Al-KhaliliHeart, Lung and Allergy Clinic, Sophiahemmet Hospital, Stockholm, Sweden.
Grethe S TellDepartment of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.
Vera EhrensteinDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
Aarhus University Hospital · DKAalborg University · DKGentofte Hospital · DKGoethe University Frankfurt · DEKarolinska Institutet · SENorwegian Institute of Public Health · NOOslo University Hospital · NOPfizer (United Kingdom) · GBSophiahemmet Hospital · SEUniversity of Bergen · NOUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsUsing Scandinavian population-based registries, we assessed risk of stroke/systemic embolism (SE) and bleeding with non-vitamin K antagonist oral anticoagulants compared with warfarin in anticoagulation-naïve patients with atrial fibrillation (AF). METHODS AND

resultsThis historical cohort study included 219 545 AF patients [median age 74 years; 43% women; mean CHA2DS2-VASc (congestive heart failure, hypertension, age ≥75 years, diabetes mellitus, stroke or transient ischaemic attack, vascular disease, age 65-74 years, sex category) score 3.3] initiating apixaban, dabigatran, rivaroxaban, or warfarin in Denmark, Norway, and Sweden (1 January 2013 to 31 December 2016). The primary endpoints were stroke/SE and major bleeding. The median follow-up times were 9.7 (3.9-21.5) months for stroke/SE and 9.6 (3.8-21.3) months for bleeding. Apixaban and warfarin initiators were older and had higher CHA2DS2-VASc scores compared with dabigatran and rivaroxaban initiators. After 1:1 propensity score matching, three cohorts were created: apixaban-warfarin (n = 111 162), dabigatran-warfarin (n = 56 856), and rivaroxaban-warfarin (n = 61 198). Adjusted hazard ratios (HRs) were estimated using a Cox regression. For stroke/SE, adjusted HRs against warfarin were 0.96 [95% confidence interval (CI): 0.87-1.06] for apixaban, 0.89 (95% CI: 0.80-1.00) for dabigatran, and 1.03 (95% CI: 0.92-1.14) for rivaroxaban. For major bleeding, the HRs against warfarin were 0.73 (95% CI: 0.67-0.78) for apixaban, 0.89 (95% CI: 0.82-0.97) for dabigatran, and 1.15 (95% CI: 1.07-1.25) for rivaroxaban. The results in the dabigatran cohort did not hold in all dose-defined subgroups.

conclusionIn this large Scandinavian study among AF patients initiating oral anticoagulation, those initiating dabigatran, apixaban, and rivaroxaban had similar rates of stroke/SE to patients initiating warfarin. Rates of major bleeding were lower with apixaban and dabigatran and higher with rivaroxaban, each compared with warfarin.

Indexed as

Atrial FibrillationEmbolismStrokeAgedAnticoagulantsCohort StudiesDabigatranFemaleHemorrhageHumansMaleRivaroxabanWarfarinAnticoagulantsDabigatranRivaroxabanWarfarinAnticoagulantsAtrial fibrillationBleedingCohort studyStroke

Identifiers

PMID34244745
PMCPMC9382660
OpenAlexW3179562740

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.