Figure 4. Adjusted Relative Risks and Cumulative Incidences of Short-term Outcomes for Multiple Arterial Grafting (MAG) vs Left Internal Thoracic Artery Supplemented by Saphenous Vein Grafts (LITA+SVG).

Adjusted cumulative incidences and relative risks for 30-day mortality, 30-day repeated revascularization, 30-day reoperation for bleeding, and in-hospital postoperative dialysis were estimated by incorporating weights that were obtained from propensity score (PS) weighting from the overall study cohort (LITA+SVG, n = 14496; MAG, n = 5580). Adjusted cumulative incidences and relative risks for 30-day myocardial infarction, stroke, and heart failure were estimated incorporating weights obtained from PS weighting from the Discharge Abstract Database (DAD)-linked study cohort (LITA+SVG, n = 7912; MAG, n = 2633). Adjusted cumulative incidences and relative risks for 30-day and 180-day sternal reconstruction were estimated by incorporating weights that were obtained from PS weighting from a subset of patients in the DAD-linked study cohort who were undergoing CABG from April 1, 2007, to September 30, 2014 (LITA+SVG, n = 7614; MAG, n = 2544). Adjusted relative risks and P values from the χ² tests were calculated by incorporating weights that were obtained from PS weighting.