In the SU group , there were greater improvements in ESS scores ( mean change 1.79 , 95 % CI +0.05 to +3.53 , p = 0.04 ) and patient satisfaction ( -1.49 , 95 % CI -2.22 to -0.76 ) ; there was a significant mean difference in BMI between the groups ( 0.57 , 95 % CI +0.01 to +1.13 , p = 0.04 ) .