Compared with the Merci/Penumbra group , the Solitaire group showed a statistically significant improvement in favorable outcomes ( mRS 2 ) ( 69 % versus 35 % , P = 0.03 ) and symptomatic ICH rate ( 0 versus 15 % , P = 0.05 ) with a trend towards higher recanalization rates ( 93.5 % versus 75 % , P = 0.096 ) and shorter length of procedure ( 58.5 min versus 70.8 min , P = 0.08 ) .