Table 1:

Baseline patient characteristics^{^a}

Variables	Fast Retrieval (n = 31)	Slow Retrieval (n = 37)	P Value
Demographics
Age (yr)	77 (57.5–83.7)	65 (49–75.7)	.10
Women	20 (64.5%)	19 (51.4%)	.28
Medical history
Smoking	7 (22.6%)	13 (35.1%)	.26
Hypertension	19 (61.3%)	22 (59.5%)	.88
Diabetes mellitus	7 (22.6%)	8 (21.6%)	.92
Dyslipidemia	12 (38.7%)	12 (32.4%)	.59
Cardiovascular events	9 (29.0%)	11 (29.7%)	.95
Clinical data at presentation
NIHSS	17 (13.25–19.75)	17 (14–20)	.94
Serum glucose level (mmol/L)^{^b}	7.5 (5.9–8.7)	6.8 (5.7–9.5)	.92
Intravenous thrombolysis	16 (51.6%)	26 (70.3%)	.12
Imaging data
DWI-ASPECTS	6 (6–8)	7 (5–8.25)	.47
Left cerebral territory	10 (32.3%)	19 (51.4%)	.12
Occlusion site			.50
ICA-L	4 (12.9%)	5 (13.5%)
M1	24 (77.4%)	25 (67.6%)
M2	3 (9.7%)	7 (18.9%)
Stroke etiology			.76
Large-artery atherosclerosis	4 (12.9%)	7 (18.9%)
Cardioembolism	10 (32.3%)	11 (29.7%)
Other known etiology	3 (9.7%)	2 (5.4%)
Unknown	14 (45.2%)	17 (45.9%)
Angiographic data
Symptom onset to thrombectomy (min)	254.5 (184–295)	230.5 (189.5–310.5)	.90
Good collaterals (ASITN/SIR 3–4)	10 (32.3%)	18 (48.6%)	.37
Balloon-guided catheter	2 (6.5%)	3 (8.1%)	1

Note:—ASITN/SIR indicates American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology.
↵a Continuous variables are described as median and interquartile range, and categoric variables, as number and percentage.
↵b Missing data for 13 and 10 patients, respectively.