Table 4. Cox proportional hazards regression analysis of functional, perfusion and historical variables.
| OR | 95% CI | p value | |
| Reversible RWA | 2.96 | 1.41-6.20 | 0.0041 |
| EF worsening | 2.25 | 1.05-4.84 | 0.0374 |
| PS-RWA | 1.02 | 0.46-2.23 | 0.97 |
| PS-EF < 45% | 0.35 | 0.11-1.06 | 0.064 |
| SSS | 1.1 | 1.05-1.15 | < 0.0001 |
| Hx of MI | 1.75 | 0.61-5.02 | 0.2951 |
| Hx of PCI/CABG | 1.29 | 0.54-3.12 | 0.5625 |
CABG, coronary artery bypass grafting; EF, ejection fraction; Hx, history; MI, myocardial infarction; PCI, percutaneous coronary intervention; PS, post-stress; RWA, regional wall motion abnormality; SSS, summed stress score.