. Author manuscript; available in PMC: 2015 Mar 22.

Published in final edited form as: J Thorac Cardiovasc Surg. 2012 Jul 19;146(1):85–89. doi: 10.1016/j.jtcvs.2012.03.087

TABLE 3.

Univariate analysis for the occurrence of a late neurological event

Variables	Event free (n = 383)	Late TIA or stroke (n = 6)	P value
CHADS₂ variables
Congestive heart failure	111 (29%)	1 (17%)	.68
Hypertension	163 (43%)	4 (67%)	.41
Age ≥75 y	28 (7%)	0	>.999
Diabetes mellitus	27 (7%)	2 (33%)	.07
Stroke or TIA history	54 (14%)	3 (50%)	.04
CHADS₂ score ≥2	122 (32%)	3 (50%)	.39
Warfarin use at follow-up	121 (32%)	3 (50%)	.39
Follow-up (y)
Mean ± SD	6.6 ± 5.0	7.9 ± 6.4	.59
Median and interquartile range	5.5 (2.0–10.6)	9.1 (1.0–13.7)	.68

Data are numbers and percentages of patients unless otherwise stated. TIA, Transient ischemic attack; SD, standard deviation.