Retreatment rate in multicenter trials
Randomized Controlled Trials (follow-up period)
Enrollment Period
Retreatment (%)
ISAT
59
(12 mo)
a
1994–2002
17%
HydroCoil, HELPS
36
(18 mo)
2004–2007
3%
Cerecyte
31
(6 mo)
a
2005–2009
4%
Matrix, MAPS
30
(12 mo)
2007–2009
10%
↵
a
Ruptured aneurysms only.