Two years after operation , the values -LSB- AHI : ( @ @ ) times/h ; lowest SaO@ : ( @ @ ) % and Tmax : ( @ @ ) s -RSB- in UA group were better than that -LSB- AHI : ( @ @ ) times/h ; lowest SaO@ : ( @ @ ) % and Tmax : ( @ @ ) s -RSB- in U group .