CHADS2 schema for selecting antithrombotic therapy in non-valvular atrial fibrillation
Risk factor
Points
Congestive heart failure
Hypertension
Age ≥ 75 years
Diabetes mellitus
Stroke (prior stroke or TIA)
1
1
1
1
2
Adapted from: Gage BF, Waterman AD, Shannon W, et al. Validation of clinical classification schemes for predicting stroke: results from the National Registry of Atrial Fibrillation. JAMA 2001;285:2864–70.
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