Table 1:

Summary of studies included in meta-analysis

Study	Design	No. of Patients	Mean Age	Sex		Aneurysms			Circulation		Treatment	Time until Imaging (hr)	Risk of Bias
Study	Design	No. of Patients	Mean Age	M	F	Ruptured	Unruptured	Total	Anterior	Posterior	Treatment	Time until Imaging (hr)	Risk of Bias
Altay et al, 2011¹²	R	184	58.8	44	154^{^a}	65	133	198	147	51	C, SAC, BAC	<72	M
Biondi et al, 2000²⁵	R	20	50	5	15	11	9	20	16	4	C	2–4 and 24–48	M
Brasiliense et al, 2016¹⁶	P	59	59	11	48	70	0	70	60	10	FD	24	M
Cronqvist et al, 2005³²	P	40	49.4	13	27	16	30	46	38	8	C	18–52	M
Hahnemann et al, 2014⁷	R	75	52.6	21	54	0	75	75	35	40	SAC	<120	H
Heller et al, 2013¹⁷	P	76	56	11	65	68	10	78	53	25	SAC	24–48	H
Iosif et al, 2015¹⁸	P	38	53	7	31	–	–	49	48	1	FD	<48	H
Ishibashi et al, 2006¹⁵	R	74	–	–	–	29	45	74	63	11	C, BAC	<48	H
Kang et al, 2013⁶	R	343	–	99	283^{^a}	0	382	382	323	59	C, SAC, BAC	–	M
Kang et al, 2013²⁴	P	40	54.8	13	27	0	40	40	33	7	C, SAC	<24	M
Kim et al, 2013¹¹	R	90	58	20	72^{^a}	0	92	92	78	14	C	<24	M
Kim et al, 2014¹⁰	R	58	–	23	35	0	62	62	–	–	C, SAC	23–46	M
Kim et al, 2016²⁷	R	309	–	84	225	0	338	338	306	32	C, SAC	24–48	M
McGuinness et al, 2015³³	P	31	56	4	27	8	25	33	30	3	FD	48–240	H
Nagahata et al, 2011³⁴	R	14	58.6	1	13	0	14	14	14	0	C, BAC	<96	M
Nishikawa et al, 2013⁴	R	154	58.8	37	117	0	157	157	108	49	C, SAC, BAC	48–120	M
Park et al, 2016⁵	R	271	57.2	68	203	0	271	271	226	45	C, SAC, BAC	24	L
Rordorf et al, 2001⁹	P	14	57.2	4	10	0	14	14	14	0	C, BAC	<48	M
Sim and Shin, 2012⁸	P	39	57.7	11	28	26	13	39	32	7	C, SAC, BAC	<48	M
Soeda et al, 2003¹³	R	26	60	8	18	0	26	26	0	26	C, BAC	48–120	M
Takigawa et al, 2014¹⁴	R	119	62.9	30	89	0	119	119	95	24	SAC, BAC	24	M
Tan et al, 2015¹⁹	R	74	60	12	62	0	74	74	58	16	FD	<24	M

Note:—R indicates retrospective; P, prospective; C, coiling only; SAC, stent-assisted coiling; BAC, balloon-assisted coiling; FD, flow diversion; H, high; M, moderate; L, low; –, data was not available.
↵a Authors reported sex distribution by number of aneurysms.