Study name Type of the study Number of unruptured MCA aneurysms Mean age (year) Mean size (mm) Average angiographic F/U, months (
) Late angiographic outcome R1 R2 R3 Clipping papers
Diaz et al., 2012 [12 ] R 30 57.7 5.8 6 (25) 23 0 2 Rodriguez-Hernandez et al., 2013 [9 ] R 261 55.3 — — — — — Mori et al., 2011 [13 ] P 110 62 6.7 — — — — Van Dijk et al., 2011 [10 ] P 31 52.3 — 12 (11) 11 0 0
Jung et al., 2011 [14 ]
R 19 72.11 6.8* — — — —
Güresir et al., 2011 [15 ]
P 108 51 6.5 — — — —
Choi et al., 2012 [16 ]
R 143 57.8 4 1.5 (143) 137 3 3
Morgan et al., 2010 [17 ]
R 339 52.7 — — — — —
Maruyama et al., 2013 [18 ]
R 11 63 4.5 — — — — Total 1052 58.2 5.7 6.5 (179) 171 3 5 Coiling papers
Ihn et al., 2013 [19 ] R 7 51 4.1 7 (6) 6 0 0
Diaz et al., 2012 [12 ] R 40 57.7 7.5 11.9 (40) 31 4 5
Jin, 2013 [20 ]
R 42 58.6 5.2* — — — —
Cho, 2012 [21 ]
P 36 60 — — — — —
Fields, 2013 [22 ]
R 22 62 — 12 (18) 12 3 3
Kim et al., 2011 [23 ] R 76 59 7.8 — — — —
Vendrell, 2011 [24 ]
R 52 52 — 14 (48) 34 6 8
Yang et al., 2010 [25 ] R 3 49.7 — 5 (3) 3 0 0
Quadros et al., 2007 [26 ] R 26 48 7.5 12.9 (24) 8 15 1
Iijima et al., 2005 [27 ] R 77 49 7 — — — —
Vendrell, 2009 [28 ]
R 71 49.9 6.1 — — — —
Lubicz et al., 2006 [29 ] P 17 51.8 — — — — —
Kadkhodayan et al., 2013 [11 ] R 239 56 6.3 6 (107) 71 23 13
Yahia et al., 2008 [30 ] R 3 53 10 — — — —
Gory, 2013 [31 ]
P 90 53.2 6.4 — — — —
Doerfler, 2006 [32 ]
R 17 47.8 6.8 6 (15) 12 2 1
Güresir et al., 2011 [15 ]
P 21 — — — — — — Total 839 53.7 6.8 9.4 (261) 177 53 31
