borderline significantP = 0.02
As response to AIAB therapy differs by race, we decided a priori to stratify all analyses by race/ethnicity.[ 20 ] Significant (or borderline significant) interactions between AIAB use and race/ethnicity for RV volumes ( P = 0.02 for RVEDV and P = 0.16 for RVESV, respectively) supported this approach.