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. 2013 Feb;34(2):266–270. doi: 10.3174/ajnr.A3032

Retreatment rate in multicenter trials

Randomized Controlled Trials (follow-up period) Enrollment Period Retreatment (%)
ISAT59 (12 mo)a 1994–2002 17%
HydroCoil, HELPS36 (18 mo) 2004–2007 3%
Cerecyte31 (6 mo)a 2005–2009 4%
Matrix, MAPS30 (12 mo) 2007–2009 10%
a

Ruptured aneurysms only.