In spite of a not-significant larger transection area in the LF1212 group compared with the Kelly group ( 51.5 versus 39cm ( 2 ) , P = 0.116 ) , the overall and ` per cm ( 2 ) ' blood losses were similar whereas the transection speed was better ( even if not significantly ) in the LF1212 group compared with the Kelly group ( 1.1 cm ( 2 ) / min versus 0.8 , P = 0.089 ) .