Table 1

Demographic and baseline characteristics

Study	Sample size		Study design	Type of stent used	Age (years) mean±SD				Male (%)
Study	M1	M2	Study design	Type of stent used	Total	M1	M2		Total			M1		M2
Lapergue et al 18	204	79	Randomized	Aspiration vs stent retriever		69.9±14.3			54.3
Salahuddin et al 10	153	59	Retrospective	Aspiration or stent retriever	70.0±14.7	70.2±15.3	69.6±13.2		49.5			43.8		64.4
Bhogal et al 12	479	106	Retrospective	Stent retriever	71.3±13	72±12.8	68±13.8		50.2			49.3		54.7
Coutinho et al 13	249	50	Post-hoc analysis	Stent retriever	67.7±12.7	67±13	71±11		45			43		52
Castonguay et al 19	344	84	Prospective	Stent retriever	66.1±13.1	66.5±14.4	64.7±3.8		NR			NR		NR
Protto et al 14	46	22	Prospective	Stent retriever	66.1±11.2	65.3±12.8	69.8±9.3		43			35		68
Dorn et al 17	104	16	Retrospective	Stent retriever	69.2±14.1	69.4±14	68.1±14.8		NR			NR		NR
Atchaneeyasakul et al 20	NA	201	Retrospective	Aspiration versus stent retriever	NR	NA	NR		NR			NA		NR
Kim et al 15	NA	41	Retrospective	Aspiration versus stent retriever	72 (64–79)	NA	72 (64–79)		59			NA		59
Sarraj et al 22	NA	288	Retrospective	Aspiration or stent retriever	66±15	NA	66±15		50			NA		50
Park and Kwak21	NA	32	Retrospective	Aspiration	70.1±10.8	NA	70.1±10.8		52			NA		52
Flores et al 16	NA	65	Prospective	Stent retriever	66.6±15.8	NA	66.6±15.8		52			NA		52