Table 4. The frequency of small aneurysms and the average size of rupture of previously reported clinical and autopsy series.

Author/Year	Number of RIAs		Size of Ruptured Intracranial Aneurysm				Average Rupture Size
			< 5 mm	5-10 mm		> 10 mm
1- Molyneux [4] 2002		Coiled: 1073	552 (51%)	438 (41%)		83 (8%)	N/A
		Clipped: 1070	572 (53%)	426 (40%)		72 (7%)	N/A
2- Weibers et al. [6] 2003		Group 1: 41 (No history of SAH)	2 < 7 mm	5: 7.9 mm		34 > 9 mm	10.9 mm
		Group 2: 8 (With history of SAH)	7 < 7 mm	1: 7.9 mm			N/A
3-Morita et al. [7], 2012		111	N/A, but the higher the size, the higher the rupture rate and hazard ratio.				N/A
4 - Forget, et al. [8] 2001		245	86(35%)		124 (50.6%)	35 (14.4%)	N/A
5 - Joo, et al. [9] 2008		627	451 (71.8%)		552 (88%) < 10 mm	6.3 mm	6.3 mm
6- Ohashi, et al. [11] 2004		280	73 (26.1%)		135 (48.2%)	72 (25.7%)	7.6 mm
7 - Orz, et al. [12] 1997		1248	475 (38%) (< 6mm)		681 (54.5%) (6-15mm)	82 (6.5%) >15mm	6.7mm
8- Graf et al. [13] 1974		1092	142 (13%)		775 (71%) < 10 mm	175 (16%)	8.2 mm
9- Beck, et al. [17] 2006		83	50 (60%)		68 (82%) < 10 mm	6.7 mm	6.7 mm
10 - Rosenørn, et al. [18] 1993		908	162 (18%)		474 (52%)	272 (30%)	N/A
11 - Weir, et al. [19] 2002		812	50 (6%)		495 (61%)	268 (33%)	10.8 mm
12 - Inagawa, et al. [21] 1990		109	18 (17%)		50 (46%)	41 (38%)	9.5 mm
13 - MC Cormic, et al. [25] 1970		191	159 (83%) < 10 mm		32 (17%)		N/A
14- Yasui, et al. [27] 1996		25	16 (64%)		6 (24%)	3 (12%)	N/A