Background Both US and European guidelines recommend use of the CHA 2 DS 2-VASc
rather than CHADS 2 score for stroke risk stratification in atrial fibrillation (AF). However, the …

Background Both the CHADS 2 and CHA 2 DS 2-VASc scores are well-validated in Western
populations for predicting risk of stroke among patients with atrial fibrillation (AF). There is …

Background: Previous studies report that CHADS2 and CHA2DS2-VASc risk scores have
similar discriminating ability (C statistic∼ 0.6). Recently a clinically based risk score, the …

Background and Purpose—The age threshold for an increased stroke risk for patients with
atrial fibrillation may be different for Asians and non-Asians. We hypothesized that a …

North American and European guidelines on atrial fibrillation (AF) are conflicting regarding
the classification of patients at low/intermediate risk of stroke. We aimed to investigate if the …

2666 Stroke October 2017 validation studies showed fair-to-good predictive ability of the
CHADS2 score, with C statistics ranging between 0.56 and 0.82. 18 Despite these validation …

Background and Purpose—As the threshold of stroke risk for initiating oral anticoagulants is
lowered after the introduction of the nonvitamin K antagonist oral anticoagulants, the focus of …

Background: A new scoring system, the anticoagulation and risk factors in atrial fibrillation
(ATRIA) score, was proposed for risk stratification in patients with atrial fibrillation (AF) …

Objective To perform a systematic review and meta-analysis of the predictive abilities of
CHADS 2 and CHA 2 DS 2-VASc in stroke and thromboembolism risk stratification of atrial …

Abstract Objective: CHA2DS2-VASc is the extension of the CHADS2 score developed by
Birmingham 2009. This risk stratification schema is often used in clinical setting when …