Table 2 Operative outcomes in the unmatched population Unmatched analysis Overall (n = 349) Redo-OPCAB (n = 143) Redo-CABG (n = 206) P-value In-hospital mortality (%) 15 (4) 3 (2) 12 (6) 0.09 AKI (%) 50 (14) 18 (13) 32 (16) 0.43 CVA (%) 3 (1) 1 (1) 2 (1) 0.78 Use of IABP (%) 25 (7) 4 (3) 21 (10) 0.01 Composite outcome (%) 73 (21) 23 (16) 50 (25) 0.06 Reoperation for bleeding (%) 8 (2) 1 (1) 7 (3) 0.19 Completeness of revascularization (%) 257 (74) 108 (76) 149 (73) 0.92 Hospital stay (days) 8.6 (6.6) 8.2 (6.2) 8.8 (6.9) 0.07 Data are reported as mean and SD for continuous variables and as total count and percentages for categorical variables. AKI: acute kidney injury (defined as peak of postoperative creatinine >% higher than preoperative value); CVA: cerebrovascular accident; IABP: intra-aortic balloon pump (either intraoperative or postoperative).