Which study was the first to validate the modi ed CHA2DS2-VASc score for stroke risk stratification in Asian patients with atrial fibrillation?
The study by Chao et al. (2015) was the first to validate the modified CHA2DS2-VASc score for stroke risk stratification in Asian patients with atrial fibrillation. They conducted a nationwide cohort study from Taiwan and found that the age threshold for increased stroke risk among patients with atrial fibrillation was 65 years of age.