At @ years , surgical group was not significantly associated with surgical success rates ( ULS , @ % -LSB- @/@ -RSB- vs SSLF , @ % -LSB- @/@ -RSB- ; unadjusted difference , -@ % ; @ % CI , -@ % to @ % ; adjusted odds ratio -LSB- OR -RSB- , @ ; @ % CI , @ to @ ) or serious adverse event rates ( ULS , @ % -LSB- @/@ -RSB- vs SSLF , @ % -LSB- @/@ -RSB- ; unadjusted difference , -@ % ; @ % CI , -@ % to @ % ; adjusted OR , @ ; @ % CI , @ to @ ) .