Table 1.

Patients’ characteristics

	U.S. subjects (N=138)	South Korean subjects (N=84)	P
Female gender (%)	65 (47.1)	38 (45.2)	0.787
Age (years)	66.1 ± 18.0	63.9 ± 13.5	0.324
Atrial fibrillation	52 (40.0)	34 (40.5)	0.454
Initial NIH Stroke Scale (score)	17.8 ± 6.9	14.4 ± 5.3	<0.001
Mode of endovascular therapy (%)			<0.001
IA fibrinolysis alone	26 (20.6)	28 (34.6)
Mechanical alone
Merci clot retrieval	79 (62.7)	0 (0)
Other mechanical methods*	6 (4.8)	14 (17.3)
Mechanical + IA fibrinolysis	15 (11.9)†	39 (48.1)
Time from onset to endovascular therapy (h)	5.9 ± 2.4	4.2 ± 1.7	0.001
IV tissue plasminogen activator prior to endovascular therapy (%)	27 (19.6)	53 (63.1)	<0.001

^*including mechanical clot disruption, angioplasty with/without stent

^†including 14 patients who received Meci clot retrieval