Table 2

HRs of ipsilateral ischemic events estimated by Cox regression analysis for each factor considered

Factor	Univariate analysis			Multivariate analysis
Factor	HR	95% CI	p Value	HR	95% CI	p Value
Age, ≥60/<60 years	1.153	0.374 to 3.549	0.805	4.206	1.307 to 16.413	0.041
Sex, male/female	1.002	0.326 to 3.079	0.997	13.681	1.064 to 29.523	0.047
Overweight, yes/no	1.623	0.529 to 4.983	0.397	0.083	0.003 to 2.277	0.141
Hypertension, yes/no	1.060	0.356 to 3.159	0.917	13.621	0.657 to 82.207	0.091
Dyslipidemia, yes/no	0.728	0.231 to 2.299	0.589	1.709	0.303 to 2.905	0.028
Diabetes, yes/no	0.933	0.311 to 2.799	0.901	1.388	0.078 to 24.735	0.823
Atrial fibrillation, yes/no	1.981	0.609 to 6.445	0.256	9.624	0.268 to 45.812	0.215
Coronary artery disease, yes/no	3.813	1.170 to 12.431	0.026	2.449	0.979 to 24.427	0.034
Ever smoker, yes/no	1.217	0.386 to 3.844	0.737	1.679	0.867 to 7.649	0.023
Warfarin, yes/no	1.389	0.417 to 4.628	0.592	0.316	0.000 to 0.830	0.018
Statins, yes/no	1.278	0.417 to 3.918	0.667	0.089	0.058 to 1.913	0.062
Aspirin, yes/no	0.968	0.312 to 3.004	0.955	0.254	0.007 to 9.537	0.459
Beta-blockers, yes/no	2.293	0.618 to 8.506	0.215	0.473	0.000 to 0.916	0.022
Degree of carotid stenosis, 90%–99%/70%–89%	3.992	1.087 to 14.662	0.037	2.089	0.080 to 54.780	0.658
CVR, <10%/≥10%	4.311	1.365 to 13.620	0.013	3.767	0.369 to 4.910	0.012