The percentage of outliers -- defined as less than -3 or more than 3 from the correct orientation of the tibial slope -- was significantly higher in the group treated with use of patient-specific blocks than it was in the control group , in both the intent-to-treat ( 32 % versus 8 % , p = 0.032 ) and the per-protocol ( 47 % versus 6 % , p = 0.0008 ) analysis .