The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.
A Comparison of Warfarin and Aspirin for the Prevention of Recurrent Ischemic Stroke
Open accessAbstract
BACKGROUND: Despite the use of antiplatelet agents, usually aspirin, in patients who have had an ischemic stroke, there is still a substantial rate of recurrence. Therefore, we investigated whether warfarin, which is effective and superior to aspirin in the prevention of cardiogenic embolism, would also prove superior in the prevention of recurrent ischemic stroke in patients with a prior noncardioembolic ischemic stroke. METHODS: In a multicenter, double-blind, randomized trial, we compared the effect of warfarin (at a dose adjusted to produce an international normalized ratio of 1.4 to 2.8) and that of aspirin (325 mg per day) on the combined primary end point of recurrent ischemic stroke or death from any cause within two years. RESULTS: The two randomized study groups were similar with respect to base-line risk factors. In the intention-to-treat analysis, no significant differences were found between the treatment groups in any of the outcomes measured. The primary end point of death or recurrent ischemic stroke was reached by 196 of 1103 patients assigned to warfarin (17.8 percent) and 176 of 1103 assigned to aspirin (16.0 percent; P=0.25; hazard ratio comparing warfarin with aspirin, 1.13; 95 percent confidence interval, 0.92 to 1.38). The rates of major hemorrhage were low (2.22 per 100 patient-years in the warfarin group and 1.49 per 100 patient-years in the aspirin group). Also, there were no significant treatment-related differences in the frequency of or time to the primary end point or major hemorrhage according to the cause of the initial stroke (1237 patients had had previous small-vessel or lacunar infarcts, 576 had had cryptogenic infarcts, and 259 had had infarcts designated as due to severe stenosis or occlusion of a large artery). CONCLUSIONS: Over two years, we found no difference between aspirin and warfarin in the prevention of recurrent ischemic stroke or death or in the rate of major hemorrhage. Consequently, we regard both warfarin and aspirin as reasonable therapeutic alternatives.
Overview
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.
Integrity signals
Registry
Cites
Statistics
Verification
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.
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?
In the citing paper
“In such patients oral vitamin K antagonists are not superior to aspirin but are associated with a higher bleeding risk.512,513”
From European Guidelines on cardiovascular disease prevention in clinical practice (version 2012) (2012) · cites this paper as [512]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Nonparametric Estimation from Incomplete Observations
Kaplan, E. L., & Meier, P. (1992) · Springer series in statistics · doi:10.1007/978-1-4612-4380-9_25 · Cited by 45,239
Nonparametric Estimation from Incomplete Observations
Kaplan, E. L., & Meier, P. (1958) · Journal of the American Statistical Association · doi:10.1080/01621459.1958.10501452 · Cited by 39,158
Evaluation of survival data and two new rank order statistics arising in its consideration.
Mantel, N. (1966) · PubMed · Cited by 7,516
(1996) · The Lancet · doi:10.1016/s0140-6736(96)09457-3 · Cited by 6,503
A Method to Determine the Optimal Intensity of Oral Anticoagulant Therapy
Rosendaal, F. R., Cannegieter, S. C., van der Meer, F. J. M., & Briët, E. (1993) · Thrombosis and Haemostasis · doi:10.1055/s-0038-1651587 · Cited by 2,070
Petersen, P., GODTFREDSEN, J., Boysen, G., Andersen, E. D., & Andersen, B. (1989) · The Lancet · doi:10.1016/s0140-6736(89)91200-2 · Cited by 1,814
The Boston Area Anticoagulation Trial for Atrial Fibrillation Investigators* (1990) · New England Journal of Medicine · doi:10.1056/nejm199011293232201 · Cited by 1,525
Warfarin in the Prevention of Stroke Associated with Nonrheumatic Atrial Fibrillation
Ezekowitz, M. D., Bridgers, S. L., James, K. E., Carliner, N. H., Colling, C. L., Gornick, C. C., Krause-Steinrauf, H. J., Kurtzke, J. F., Nazarian, S. M., Radford, M. J., et al. (1992) · New England Journal of Medicine · doi:10.1056/nejm199211123272002 · Cited by 1,204
Hass, W. K., Easton, J. D., Adams, H. P., Pryse-Phillips, W. E. M., Molony, B. A., Anderson, S., Kamm, B., & for the Ticlopidine Aspirin Stroke Study Group (1989) · New England Journal of Medicine · doi:10.1056/nejm198908243210804 · Cited by 1,194
Self-citationWarfarin in the Prevention of Stroke Associated with Nonrheumatic Atrial Fibrillation
Barnes, D. J. (1993) · New England Journal of Medicine · doi:10.1056/nejm199301143280227 · Cited by 1,072
Flagged first, then by citations
Research works printed but not linked: 4
- 1980, Lancet, 2, 989
- Thompson JLP, 1994, Ann Neurol, 36, 305
- 10.2307/2281868 · DOI · Paper page
- Mantel N, 1966, Cancer Chemother Rep, 50, 163
Cited by
Sorted by citations
Zhang, Q., Wang, C., Zheng, M., Li, Y., Li, J., Zhang, L., Shang, X., & Yan, C. (2014) · Cerebrovascular Diseases · doi:10.1159/000369778 · Cited by 11,609
European Guidelines on cardiovascular disease prevention in clinical practice (version 2012)
Authors/Task Force Members:, Perk, J., De Backer, G., Gohlke, H., Graham, I., Reiner, Ž., Verschuren, M., Albus, C., Benlian, P., Boysen, G., et al. (2012) · European Heart Journal · doi:10.1093/eurheartj/ehs092 · Cited by 8,490
2016 European Guidelines on cardiovascular disease prevention in clinical practice
Piepoli, M. F., Hoes, A. W., Agewall, S., Albus, C., Brotons, C., Catapano, A. L., Cooney, M.-T., Corrà, U., Cosyns, B., Deaton, C., et al. (2016) · European Heart Journal · doi:10.1093/eurheartj/ehw106 · Cited by 6,457
2021 ESC Guidelines on cardiovascular disease prevention in clinical practice
Visseren, F. L. J., Mach, F., Smulders, Y. M., Carballo, D., Koskinas, K. C., Bäck, M., Benetos, A., Biffi, A., Boavida, J.-M., Capodanno, D., et al. (2021) · European Heart Journal · doi:10.1093/eurheartj/ehab484 · Cited by 6,485
Kernan, W. N., Ovbiagele, B., Black, H. R., Bravata, D. M., Chimowitz, M. I., Ezekowitz, M. D., Fang, M. C., Fisher, M., Furie, K. L., Heck, D. V., et al. (2014) · Stroke · doi:10.1161/str.0000000000000024 · Cited by 5,170
Self-citation
Metadata
- Authors
- Mohr, J. P., Thompson, J. L. P., Lazar, R. M., Levin, B., Sacco, R. L., Furie, K. L., Kistler, J. P., Albers, G. W., Pettigrew, L. C., Adams, H. P., Jackson, C. M., & Pullicino, P.
- Affiliations
- Columbia University Irving Medical Center (US)
- Massachusetts General Hospital (US)
- Stanford Medicine (US)
- University of Kentucky (US)
- University of California San Diego (US)
- University at Buffalo, State University of New York (US)
- ORCID
- Venue
- New England Journal of Medicine
- Publisher
- Massachusetts Medical Society
- Published
- 2001-11-15
- Volume
- 345
- Issue
- 20
- Pages
- 1444-1451
- ISSN
- 0028-4793 (ISSN-L)
- 1533-4406
- OpenAlex
- W2027538725
- Cited by
- 1,168
- References
- 39
- Citations by year
- 2026: 9 · 2025: 12 · 2024: 13 · 2023: 22 · 2022: 20 · 2021: 40 · 2020: 24 · 2019: 37 · 2018: 32 · 2017: 33 · 2016: 50 · 2015: 41 · 2014: 54 · 2013: 39 · 2012: 49
- FWCI
- 54.22
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- New England Journal of Medicine (publishedVersion)
- PubMed (publishedVersion)
- Kent Academic Repository (University of Kent) (submittedVersion)
- Funders
- U.S. Department of Veterans Affairs
- Yale University
- University of Southern California
- Vanderbilt University
- University of Miami
- Wayne State University
- Cleveland Clinic
- Cleveland Clinic Foundation
- Johns Hopkins University
- Hennepin County Medical Center
- University of South Alabama
- York University
- University of Illinois at Urbana-Champaign
- National Institute of Neurological Disorders and Stroke (R01NS028371)
- Topics
- Health Sciences › Medicine › Clinical Neurology › Acute Ischemic Stroke Management
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Antiplatelet Therapy and Cardiovascular Diseases
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
- Keywords
- warfarin, aspirin, recurrent ischemic stroke, secondary stroke prevention, antiplatelet therapy, major bleeding, non-cardioembolic stroke, lacunar infarction, cryptogenic stroke, international normalized ratio, anticoagulation
- MeSH terms
- Adult, Aged, Aged, 80 and over, Anticoagulants, Aspirin, Brain Ischemia, Double-Blind Method, Female, Hemorrhage, Humans, Male, Middle Aged, Mortality, Platelet Aggregation Inhibitors, Risk Factors, Warfarin, International Normalized Ratio, Stroke, Secondary Prevention
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