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Variables required for the CHADS2 stroke risk equation for patients with atrial fibrillation
| Variable | Points | |
|---|---|---|
| C | Congestive heart failure | 1 |
| H | Hypertension | 1 |
| A | Age ≥75 years | 1 |
| D | Diabetes mellitus | 1 |
| S2 | Prior stroke or TIA | 2 |
TIA, transient ischaemic attack.
