| Study | Number of aneurysms | Initial | Follow up months | Follow-up | ||||
| RG1 % | RG2 % | RG3 % | RG1 % | RG2 % | RG3 % | |||
| Brilstra et al. 1999 [10] | 201 | 61 | 26 | 13 | NA | NA | NA | NA |
| Raymond & Roy 1997 [17] | 75 | 40 | 37 | 23 | 6 | 46 | 42 | 12 |
| Kuether et al. 1998 [18] | 74 | 40 | 52 | 8 | 26 | 41 | 46 | 13 |
| Byrne et al. 1999 [12] | 317 | NA | NA | NA | 22 | 64 | 34 | 2 |
| Vanninen et al. 1999 [19] | 52 | 50 | 35 | 15 | 3 | 67 | 28 | 5 |
| Koivisto et al. 2000 [20] | 52 | 50 | 35 | 15 | 12 | 77 | 19 | 4 |
| Ng et al. 2002 [21] | 136 | 46 | 16 | 38 | NA | NA | NA | NA |
| Friedman et al. 2003 [22] | 83 | 33 | 63 | 5 | 19 | 35 | 61 | 3 |
| Murayama et al. 2003 [11] | 818 | 55 | 35 | 10 | NA | NA | NA | NA |
| Sluzewski et al. 2003 [23] | 160 | 71 | 22 | 8 | 6 | 59 | 25 | 16 |
| Henkes et al. 2004 [24] | 1811 | 66 | 21 | 13 | NA | NA | NA | NA |
| Cronqvist et al. 2005 [25] | 46 | 37 | 50 | 13 | NA | NA | NA | NA |
| Molyneux et al. 2005 [26] | 881 | NA | NA | NA | NA | 66 | 26 | 8 |
| Norbäck et al. 2005 [27] | 239 | 53 | 21 | 26 | NA | NA | NA | NA |
| Geyik et al. 2010 [28] | 80 | 71 | 28 | 1 | 10.5 | 86 | 8 | 6 |