Cited by 469Atrial Fibrillation Management and OutcomesAcute Ischemic Stroke ManagementVenous Thromboembolism Diagnosis and Management

Gender Differences in the Risk of Ischemic Stroke and Peripheral Embolism in Atrial Fibrillation: The AnTicoagulation and Risk factors In Atrial fibrillation (ATRIA) Study

Open access
Fang, Margaret C., Singer, Daniel E., Chang, Yuchiao, Hylek, Elaine M., Henault, Lori E., Jensvold, Nancy G., Go, Alan S.·2005·Circulation

Abstract

BACKGROUND: Previous studies provide conflicting results about whether women are at higher risk than men for thromboembolism in the setting of atrial fibrillation (AF). We examined data from a large contemporary cohort of AF patients to address this question. METHODS AND RESULTS: We prospectively studied 13,559 adults with AF and recorded data on patients' clinical characteristics and the occurrence of incident hospitalizations for ischemic stroke, peripheral embolism, and major hemorrhagic events through searching validated computerized databases and medical record review. We compared event rates by patient sex using multivariable log-linear regression, adjusting for clinical risk factors for stroke, and stratifying by warfarin use. We identified 394 ischemic stroke and peripheral embolic events during 15,494 person-years of follow-up off warfarin. After multivariable analysis, women had higher annual rates of thromboembolism off warfarin than did men (3.5% versus 1.8%; adjusted rate ratio [RR], 1.6; 95% CI, 1.3 to 1.9). There was no significant difference by sex in 30-day mortality after thromboembolism (23% for both). Warfarin use was associated with significantly lower adjusted thromboembolism rates for both women and men (RR, 0.4; 95% CI, 0.3 to 0.5; and RR, 0.6; 95% CI, 0.5 to 0.8, respectively), with similar annual rates of major hemorrhage (1.0% and 1.1%, respectively). CONCLUSIONS: Women are at higher risk than men for AF-related thromboembolism off warfarin. Warfarin therapy appears be as effective in women, if not more so, than in men, with similar rates of major hemorrhage. Female sex is an independent risk factor for thromboembolism and should influence the decision to use anticoagulant therapy in persons with AF.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1161/circulationaha.105.553438

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Female AF patients who have additional stroke risk factors, particularly older age, are at greater risk than men of having a stroke, even those anticoagulated with warfarin.

    “Female AF patients who have additional stroke risk factors (particularly older age) are also at greater risk than men of having a stroke, 48,49 even those anticoagulated with warfarin 50 (see Chapter 8 for details).”
  • Bleeding risk on anticoagulation is similar in both sexes.

    “Bleeding risk on anticoagulation is similar in both sexes, 49,50,53 but women appear less likely to receive specialist care and rhythm control therapy, 54 while the outcomes of catheter ablation or AF surgery are comparable to those in men.55,56”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Fang, M. C., Singer, D. E., Chang, Y., Hylek, E. M., Henault, L. E., Jensvold, N. G., & Go, A. S.
Affiliations
Boston University (US)
Venue
Circulation
Published
2005-09-20
Volume
112
Issue
12
Pages
1687-1691
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2101535898
Cited by
469
References
34
Citations by year
2026: 11 · 2025: 10 · 2024: 14 · 2023: 16 · 2022: 18 · 2021: 18 · 2020: 17 · 2019: 17 · 2018: 28 · 2017: 32 · 2016: 32 · 2015: 31 · 2014: 18 · 2013: 27 · 2012: 41
FWCI
13.02
Type
journal article
Language
en
Open access
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • AstraZeneca
  • Massachusetts General Hospital
  • National Institute on Aging (K23AG028978, AG 15478, R01AG015478)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
  • Health Sciences › Medicine › Internal Medicine › Venous Thromboembolism Diagnosis and Management
Keywords
atrial fibrillation, ischemic stroke, peripheral embolism, sex differences, thromboembolic risk, warfarin, anticoagulation, major bleeding
MeSH terms
Aged, Aged, 80 and over, Anticoagulants, Atrial Fibrillation, Female, Humans, Hypertension, Male, Middle Aged, Risk Factors, Sex Characteristics, Thromboembolism, Warfarin, Cohort Studies, Stroke

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review