Table 6.
Risk factor analysis for major adverse cardiac and cerebrovascular events
| Variable | Univariable analysis (p-value) | Multivariable analysis | |
|---|---|---|---|
|
| |||
| sHR (95% CI) | p-value | ||
| Sex (female) | 0.596 | ||
| Age | 0.113 | ||
| STS scorea) | 0.053 | - | - |
| EuroSCORE IIa) | <0.001 | - | - |
| FI-L | <0.001 | 1.054 (1.030–1.078) | <0.001 |
| Hypertension | 0.862 | ||
| Diabetes mellitus | 0.110 | ||
| Dyslipidemia | 0.230 | ||
| History of stroke | 0.216 | ||
| Peripheral vascular diseasea) | 0.013 | - | - |
| Chronic obstructive pulmonary diseasea) | 0.099 | ||
| Atrial fibrillation | 0.016 | 3.118 (1.280–7.596) | 0.012 |
| Left ventricular dysfunction (EF <35%)a) | 0.019 | - | - |
| History of coronary intervention | 0.153 | ||
| Acute coronary syndrome | 0.393 | ||
| On-pump beating CABG | 0.590 | ||
| Use of the left internal thoracic artery | 0.765 | ||
| No. of anastomoses | 0.805 | ||
sHR, subdistribution hazard ratio; CI, confidence interval; STS, Society of Thoracic Surgeons; EuroSCORE II, European System for Cardiac Operative Risk Evaluation II; FI-L, frailty index based on laboratory data and vital signs; EF, ejection fraction; CABG, coronary artery bypass grafting.
a)Variables were included in the multivariable analysis but were dropped during stepwise analysis.