Fewer patients received RBCs on the restrictive policy than on the liberal policy ( restrictive policy @ -LSB- @ % -RSB- vs liberal policy @ -LSB- @ % -RSB- ; difference -@ % -LSB- @ % CI -@ to @ -RSB- ; p = @ ) , with fewer RBC units transfused ( mean @ -LSB- SD @ -RSB- vs @ -LSB- @ -RSB- ; difference -@ -LSB- -@ to @ -RSB- ; p = @ ) , although these differences were not significant .