Table 1.

Study population characteristics at baseline

	Total (n = 93)	Non-IS (n = 18)	IS (n = 75)	P value
Gender, n(%)				0.002*
Female	33 (35.48%)	12 (66.67%)	21 (28.00%)
Male	60 (64.52%)	6 (33.33%)	54 (72.00%)
Age (years), mean ± SD	39 ± 10	41 ± 12	38 ± 9	0.251
BMI	23.56 ± 2.90	23.95 ± 2.95	23.47 ± 2.91	0.533
SBP	134.17 ± 21.06	132.67 ± 19.00	134.53 ± 21.62	0.738
DBP	86.71 ± 14.83	88.50 ± 18.13	86.28 ± 14.04	0.571
Hypertension, n(%)	70 (75.27%)	9 (50.00%)	61 (81.33%)	0.006*
Hyperlipidemia, n(%)	2 (2.15%)	1 (5.56%)	1 (1.33%)	0.267
Diabetes, n(%)	2 (2.174%)	1 (5.88%)	1 (1.33%)	0.246
Smoking, n(%)	29 (31.18%)	4 (22.22%)	25 (33.33%)	0.361
Dissection side, n(%)				0.306
Left	52 (55.91%)	12 (66.67%)	40 (53.33%)
Right	41 (44.09%)	6 (33.33%)	35 (46.67%)
Dissection location, n(%)				0.002*
Extracranial	58 (62.37%)	17 (94.44%)	41 (54.67%)
Intracranial	35 (37.63%)	1 (5.56%)	34 (45.33%)
Morphology subtypes, n(%)				0.139
Pearl-and-string appearance	19 (20.43%)	1 (5.56%)	18 (24.00%)
Steno-occlusion only	46 (49.46%)	9 (50.00%)	37 (49.33%)
Aneurysmal dilatation only	28 (30.11%)	8 (44.44%)	20 (26.67%)
VAH, n(%)				0.711
None	66 (70.97%)	14 (77.78%)	52 (69.33%)
Ipsilateral	16 (17.20%)	1 (5.56%)	7 (9.33%)
Opposite	6 (6.45%)	3 (16.67%)	11 (14.67%)
Bilateral	5 (5.38%)	0 (0.00%)	5 (6.67%)
PICA occlusion, n(%)				0.371
None	31 (33.33%)	3 (16.67%)	28 (37.33%)
Ipsilateral	31 (33.33%)	8 (44.44%)	23 (30.67%)
Opposite	20 (21.51%)	4 (22.22%)	16 (21.33%)
Bilateral	11 (11.83%)	3 (16.67%)	8 (10.67%)
Types of aortic arch, n(%)				0.608
Type 1	85 (91.40%)	17 (94.44%)	68 (90.67%)
Type 2	8 (8.60%)	1 (5.56%)	7 (9.33%)

Values are n (%), mean ± SD, or median (quartiles). *Statistically significant at P < 0.05

IS ischemic stroke, BMI body mass index, SBP Systolic Blood Pressure, DBP Diastolic Blood Pressure, VAH vertebral artery hypoplasia, PICA Posterior Inferior Cerebellar Artery