Table 1. Demographic manifestations and frequency of more than 50% stenosis in cervical and cerebral arteries (for bilateral arteries right and/or left side involvements were considered).

Involved Artery	All Patients N = 342 [Stenosis (%)/Total Occlusion (%)]	Males N = 213 [Stenosis (%)/Total Occlusion (%)]	Females N = 129 [Stenosis (%)/Total Occlusion (%)]	P-Value* [Stenosis (%)/Total Occlusion (%)]
Innominate artery	0(0%)/1(0.3%)	0(0%)/0(0%)	0(0%)/1(0.8%)	_/0.4
Common carotid arteries	41(12%) /4(1.2%)	26(12.2%)/4(1.9%)	15(11.6%)/0(0%)	0.9/0.3
Extracranial internal carotid arteries	203(59.4%) /53(15.5%)	130(61%)/36(16.9%)	73(56.6%)/17(13.2%)	0.4/0.4
Intracranial internal carotid arteries	50(14.6%)/39(11.4%)	32(15%)/27(12.7%)	18(14%)/12(9.3%)	0.8/0.3
Middle cerebral arteries	37(10.8%)/7(2%)	21(9.9%)/2(0.9%)	16(12.4 %)/5(3.9%)	0.5/0.1
Anterior cerebral arteries	11(3.2%)/0(0%)	5(2.4%)/0(0%)	6(4.7%)/0(0%)	0.2/_
Subclavian arteries	5(1.4%)/0(0%)	4(1.9%)/0(0%)	1(0.8%)/0(0%)	0.7/_
Extracranial vertebral arteries	85(24.8%)/21(6.1%)	55(25.9%)/16(7.5%)	30(23.3%)/5(3.9%)	0.6/0.2
Intracranial vertebral arteries	7(2%)/0(0%)	4(1.9%)/0(0%)	3(2.3%)/0(0%)	1/_
Basilar artery	14(4.1%)/0(0%)	9(4.2%)/0(0%)	5(3.9%)/0(0%)	0.9/_
Posterior cerebral arteries	20(5.8%)/3(0.9%)	15(7%)/3(1.4%)	5(3.9%)/0(0%)	0.2/0.3

^*Demonstrates the statistical difference of stenosis/occlusion between male and female populations.