Patients with @ to @ prognostic factors ( n = @ ) had reduced mortality with CABG compared with those who received OMT ( hazard ratio -LSB- HR -RSB- : @ ; @ % confidence interval -LSB- CI -RSB- : @ to @ ; p = @ ) ; CABG had no such effect in patients with @ to @ factor ( HR : @ ; @ % CI : @ to @ ; p = @ ) .