RESULTS	Significantly fewer patients had air leakage at any time in the Vivostat group ( 40 vs. 80 % , P = 0.02 ) , and air leakage volumes were significantly lower compared with the control group ( median differences : day of surgery : 0.6 l/min , P = 0.01 ; total 0.8 l/min , P = 0.03 ) .\