Table 2.

Risk Stratification Scheme for Audiobooklet Decision Aid

	Risk of Stroke Over 2 Years
Risk Level	No Therapy	Aspirin	Warfarin
Low	3%	2%	1%
<70 years old, no hypertension,no diabetes, no congestive heartfailure, no previous TIA or stroke
Medium	8%	6%	3%
>70 years old, no hypertension,no diabetes, no congestive heartfailure, no previous TIA or stroke,
or
<70 years old, and 1 or more ofthe following: hypertension,diabetes, congestive heart failure
High	14%	11%	5%
>70 years old, and one or moreof the following: hypertension,diabetes, congestive heart failure
Very high	20%	16%	7%
Previous TIA or stroke

TIA indicates transient ischemic attack.