RESULTS	Neither in different time periods ( early or late ) nor the activity status ( while resting or coughing ) yielded a statistical difference on aNRS scores between the muscle flap group and the control group ( muscle flap group vs control group : mean ( 95 % confidence intervals ) from d ay 1 to day 7 , 4.42 ( 1.56-7 .28 ) vs 4.79 ( 2.03-7 .55 ) on coughing ( p = 0.282 ) ; median ( inter-quartile range , IQR ) from day 1 to day 7 , 1.71 ( 0.86-3 ) vs 2.50 ( 1.16-3 .12 ) while resting ( p = 0.279 ) ; median ( IQR ) from week 2 to week 12 , 0.43 ( 0-0 .86 ) vs 0.48 ( 0.06-1 .20 ) on coughing ( p = 0.595 ) ; median ( IQR ) from week 2 to week 12 , 0 ( 0-0 .14 ) vs 0.05 ( 0-0 .14 ) while resting ( p = 0.856 ) ) .\