Fig. 2

Post-operative outcomes when stratifying by two and four HbA1c groupings. HbA1c, hemoglobin A1c; ONCAB, on-pump coronary artery bypass grafting; OPCAB, off-pump coronary artery bypass grafting. The top graphic represents operative mortality for both surgical techniques. The bottom graphic represents new post-operative dialysis for both surgical techniques. For these outcomes, p-values are present from the analysis of each using both four HbA1c groups (Table 5) and two HbA1c groups (Table 6). For operative mortality, OPCAB surgery showed a positive trend that was shown to be significant when using two HbA1c groups for analysis. For new post-operative dialysis, ONCAB surgery showed a positive trend that was shown to be significant when using two HbA1c groups for analysis