If you have atrial fibrillation and you want to know your risk for stroke just answer the following qiesions
CHADS VASC (Cha2DS2-VASc score)
Calculate stroke risk in patients with Atrial Fibrillation
Total your Chad Vas Score
According to the American Heart Association (AHA), the American  College of Cardiology (ACC).
Score of 2 or greater increases the risk of stroke as much as 5 times.
To reduce the risk of stroke, it's important to take prescription blood thinners daily.