The success rate of LSR monitoring was clinically acceptable and significantly higher in group T1 than in group TOF , i.e. n = 15 ( 50.0 % ) in group TOF versus n = 24 ( 82.8 % ) in group T1 ( P = 0.008 ) , corresponding to a 32.8 % higher success rate in group T1 than group TOF ( 95 % CI : 13.9-51 .7 % ) .