Table 1.

Univariate logistic regression analysis of factors associated with BA dolichosis in patients with ACI.

Variable	BA dolichosis group (n = 238)	Non-BA dolichosis group (n = 481)	Unadjusted OR (95%CI)	Value of p
Demographic data
Age (years)	63.1 ± 10.3	64.0 ± 10.4	0.99 (0.98–1.01)	0.289
Male sex, n (%)	187 (78.6)	313 (65.1)	1.97 (1.37–2.83)	<0.001
Risk factors
Current smoking, n (%)	86 (36.1)	119 (24.7)	1.72 (1.23–2.41)	0.002
Hypertension, n (%)	152 (63.9)	293 (60.9)	1.13 (0.82–1.56)	0.443
Diabetes mellitus, n (%)	84 (35.3)	129 (26.8)	1.49 (1.07–2.08)	0.020
Dyslipidemia, n (%)	72 (30.3)	124 (25.8)	1.25 (0.89–1.76)	0.205
Blood pressure on admission
Systolic blood pressure (mmHg)	152.3 ± 21.1	150.1 ± 20.0	1.01 (1.00–1.01)	0.168
Diastolic blood pressure (mmHg)	90.6 ± 12.5	88.1 ± 12.1	1.02 (1.00–1.03)	0.013
Laboratory indices
Blood glucose (mmol/L)	6.26 ± 2.91	6.65 ± 3.03	0.96 (0.90–1.01)	0.111
Total cholesterol (mmol/L)	4.30 ± 0.86	4.34 ± 0.98	0.95 (0.80–1.12)	0.514
Triglycerides (mmol/L)	1.99 ± 1.27	1.96 ± 1.42	1.02 (0.91–1.14)	0.776
Low-density lipoprotein (mmol/L)	2.59 ± 0.74	2.65 ± 0.86	0.91 (0.75–1.10)	0.307
C-reactive protein (mg/L)	6.57 ± 11.10	7.21 ± 13.09	1.00 (0.98–1.01)	0.511
Homocysteine (μmol/L)	16.50 ± 13.94	15.00 ± 11.17	1.01 (1.00–1.02)	0.125
Vertebrobasilar artery features
BA diameter (mm)	3.17 ± 0.68	2.78 ± 0.53	3.12 (2.32–4.19)	<0.001
Left VA diameter (mm)	2.52 ± 0.94	2.29 ± 0.77	1.41 (1.16–1.72)	0.001
Right VA diameter (mm)	2.28 ± 0.81	2.09 ± 0.77	1.38 (1.13–1.70)	0.002
VA diameter difference (mm)	0.98 ± 0.93	0.85 ± 0.77	1.20 (1.00–1.44)	0.054
BL (mm)	4.97 (2.22, 7.71)	0 (0, 3.53)	1.44 (1.35–1.53)	<0.001
BA bending, n (%)	185 (77.7)	218 (45.3)	4.21 (2.96–6.00)	<0.001
VAD, n (%)	168 (70.6)	338 (70.3)	1.02 (0.72–1.14)	0.930

BA, basilar artery; VA, vertebral artery; BL, bending length; VAD, vertebral artery dominance.