A Single-Center Experience in Low Ejection Fraction Coronary Artery Bypass Surgery

Figure 1

Balancing of the proportion of CABG patients between OPCAB and ONCAB was achieved through stabilized inverse probability treatment weighted matching. The incorporated covariates for the matching included age, BMI, gender, diabetes, chronic lung disease, liver dysfunction, kidney dialysis, stroke, peripheral vascular disease, myocardial infarction, hypertension, arrhythmia, number of diseased vessels, sleep apnea, hemoglobin, creatinine, and EF. The weighted matching samples resulted in improved balance between the two CABG procedures.