Compared with the Merci/Penumbra group , the Solitaire group showed a statistically significant improvement in favorable outcomes ( mRS @ ) ( @ % versus @ % , P = @ ) and symptomatic ICH rate ( @ versus @ % , P = @ ) with a trend towards higher recanalization rates ( @ % versus @ % , P = @ ) and shorter length of procedure ( @ min versus @ min , P = @ ) .