Table 2.

Baseline characteristics of the study groups

Baseline characteristics	group A (n = 4)	group B (n = 6)	group C (n = 26)	P value
Age (mean ± SD), years	68.5 ± 7.6	56.7 ± 13.0	61.3 ± 14.7	0.54
Male, n (%)	1 (25.0)	3 (50.0)	14 (53.8)	0.8
Side (left), n (%)	3 (75.0)	3 (50.0)	7 (26.9)	0.39
Duration of symptoms (mean ± SD), months	96.8 ± 93.7	56.0 ± 40.2	73.0 ± 78.2	0.82
Risk factors, n (%)
Hypertension	0 (0)	0 (0)	9 (34.6)	0.36
Dyslipidemia	0 (0)	0 (0)	2 (7.7)	0.8
Cerebrovascular disease	1 (25.0)	0 (0)	2 (7.7)	0.93
Nerve block	1 (25.0)	1 (12.5)	3 (11.5)	0.92
Gamma knife	1 (25.0)	0 (3.8)	1 (3.8)	0.8
Offending vessels, n (%)
SCA	1 (25.0)	5 (83.3)	22 (84.6)	0.13
TCA	2 (50.0)	0 (0)	7 (26.9)	0.54
AICA	3 (75.0)	2 (33.3)	8 (30.8)	0.49
VA, BA	0 (0)	0 (0)	3 (11.5)	0.93
Vein	1 (25.0)	4 (66.7)	14 (53.8)	0.8

Baseline data did not differ between the three groups. SD, standard deviation; SCA, superior cerebellar artery; TCA, trigeminal cerebellar artery; AICA, anterior inferior cerebellar artery; VA, vertebral artery; BA, basilar artery