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. Author manuscript; available in PMC: 2014 Dec 1.

Published in final edited form as: Am J Med. 2013 Oct 17;126(12):10.1016/j.amjmed.2013.05.023. doi: 10.1016/j.amjmed.2013.05.023

Table 5. Event Totals/Participant Totals and (Annualized Rates of Stroke/TIA) by Risk Score.

		CHADS ₂
	Total Participants	0	1	2	3	≥4
CHA₂DS₂-VASc	1	22/951 (0.20)
	2	44/755 (0.53)	52/1039 (0.44)
	3	5/54 (0.91)	136/1601 (0.82)	11/144 (0.77)
	4		31/239 (1.43)	71/610 (1.29)	6/62 (0.98)
	5			24/168 (1.68)	26/169 (1.73)	1/6 (1.61)
	≥6				6/68 (1.19)	22/115 (2.49)