Supplementary Table 2. Site of vessel occlusion of included studies.

Study		Singh 2017	Serles 2016	Hu 2017	Lecinana 2017	Meinel 2019	Weber 2019	Lefevre 2014
PCO	BA	25 (18.3%)	40 (13.3%)	24 (14.9%)	52 (10.9%)	165 (9.5%)	118 (10.7%)	25 (40.3%)
	VA		3 (1.0%)				15 (1.4%)
	PCA						6 (0.5%)	1 (1.6%)
ACO	ICA	51 (37.2%)	60 (19.9%)	42 (26.1%)	100 (20.9%)	1574 (90.5%)	961 (87.4)	9 (14.5%)
	M1	61 (44.5%)	161 (53.5%)	94 (58.4%)	244 (50.9%)			16 (25.8%)
	M2		28 (9.3%)		40 (8.3%)
	ACA			1 (0.6%)
	others		9 (3.0%)#		43 (9.0%)*			11 (17.8%)*

Note:

^#Represents others

^*Represents tandem occlusion; BA: Basilar artery; VA: Vertebral artery; PCA: Posterior cerebral artery; ICA: Internal carotid artery; M1: 1st segment of middle cerebral artery; M2: 2nd segment of middle cerebral artery; ACA: Anterior cerebral artery