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July 4, 2000CirculationOpen Access

Implications of Stroke Risk Criteria on the Anticoagulation Decision in Nonvalvular Atrial Fibrillation

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Why the study?

How do different stroke risk classification schemes (AFI, ACCP, SPAF) impact the proportion of NVAF patients classified as low risk for stroke?

Population

13,559 ambulatory patients with nonvalvular atrial fibrillation identified from clinical and…

Design

Cohort

Authors

AGAlan S. GoEHElaine M. HylekKPKathleen A. Phillips

Discussion

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Overview

Classification schemes yield 2- to 3-fold differences in low-risk NVAF classification; leaves optimal scheme selection open for validation.

Structured PICO

How do different stroke risk classification schemes (AFI, ACCP, SPAF) impact the proportion of NVAF patients classified as low risk for stroke?

P
Population
13,559 ambulatory patients with nonvalvular atrial fibrillation (NVAF) identified from clinical and electrocardiographic databases between July 1996 and December 1997.
I
Intervention
Stroke risk classification using Atrial Fibrillation Investigators (AFI), American College of Chest Physicians (ACCP), and Stroke Prevention in Atrial Fibrillation Investigators (SPAF) criteria
O
Outcome
Proportion of patients classified as having a low enough stroke risk to receive aspirin

Different stroke risk classification schemes result in a 2- to 3-fold difference in the proportion of NVAF patients classified as low risk, largely driven by differing age thresholds.

Cite This Study

Go et al. (2000) studied this question.

synapsesocial.com/papers/69f7e3e26d1e8212df5a2e8fhttps://doi.org/10.1161/01.cir.102.1.11
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