Table 1.
Patient profiles before propensity score matching.
| Variable | Unmatched cohorts | |||
|---|---|---|---|---|
| STS | DuraGraft | p | SMD (%) | |
| No. of patients (N) | 294,725 | 2,522 | ||
| Age | 65.6 ± 9.9 | 67.3 ± 9.2 | <0.001 | 18.1 |
| Male sex | 76.1% | 82.5% | <0.001 | 15.7 |
| Black race | 7.5% | 0.1% | <0.001 | 39.2 |
| BMI < 20 kg/m2 | 1.7% | 0.7% | <0.001 | 8.9 |
| Previous/current smoker | 61.4% | 62.1% | 0.467 | 1.5 |
| Diabetes—insulin | 18.6% | 14.5% | <0.001 | 11.1 |
| Diabetes—no insulin | 31.6% | 28.8% | 0.002 | 6.2 |
| CRF (Cr > 2.0 mg/dl) | 2.0% | 2.2% | 0.474 | 1.5 |
| Dialysis | 3.1% | 1.1% | <0.001 | 13.4 |
| PVD | 22.0% | 16.1% | <0.001 | 15.1 |
| PH | 19.3% | 8.2% | <0.001 | 32.9 |
| History of PD | 15.9% | 13.9% | 0.007 | 5.6 |
| History of CVA | 11.2% | 7.9% | <0.001 | 11.3 |
| MI ≤ 24 h | 3.2% | 1.4% | <0.001 | 12.0 |
| MI > 24 h | 50.9% | 41.4% | <0.001 | 19.1 |
| Unstable angina | 34.9% | 8.9% | <0.001 | 66.2 |
| Heart failure | 24.6% | 14.2% | <0.001 | 26.4 |
| Cardiogenic shock | 1.3% | 0.9% | 0.077 | 4.0 |
| Preop atrial fibrillation | 9.7% | 7.8% | 0.002 | 6.5 |
| Reoperation | 1.6% | 1.3% | 0.193 | 2.9 |
| Left main stem disease | 26.1% | 40.9% | <0.001 | 31.8 |
| Three-vessel disease | 79.6% | 81.2% | 0.055 | 3.9 |
| LVEF (<30%) | 6.1% | 3.1% | <0.001 | 14.7 |
| Status urgent | 60.0% | 24.1% | <0.001 | 78.0 |
| Status emergent | 3.7% | 1.3% | <0.001 | 14.9 |
| Previous CABGa | 1.3% | 0.3% | <0.001 | 11.3 |
| Previous PCIa | 30.0% | 24.6% | <0.001 | 12.1 |
| Intraoperative factors | ||||
| On-pump statusa | 88.8% | 82.9% | <0.001 | 17.0 |
| No distal anastomosesa | 3.41 ± 1.0 | 3.0 ± 0.9 | <0.001 | 43.2 |
| Use of LIMA grafta | 97.3% | 90.8% | <0.001 | 27.5 |
| No. of arterial graftsa | 1.1 ± 0.5 | 1.3 ± .0.7 | <0.001 | 28.5 |
| No. of venous graftsa | 2.2 ± 1.0 | 1.5 ± 0.9 | <0.001 | 76.2 |
| All-arterial graftsa | 2.0% | 10.4% | <0.001 | 35.6 |
| All venous graftsa | 2.7% | 5.3% | <0.001 | 13.1 |
| Endoscopic harvesta | 89.9% | 13.8% | <0.001 | 235.1 |
a
Parameters only included in the primary model.
CABG, coronary artery bypass grafting; CRF, case report form; LIMA, left internal mammary artery; CVA, cerebrovascular accident; LVEF, left ventricular ejection fraction; PCI, percutaneous coronary intervention; PD, pulmonary disease; PH, pulmonary hypertension; PVD, peripheral vascular disease; SMD, standard mean difference; STS, Society of Thoracic Surgeons.