Results of Multivariate Cox Regression Analyses Assessing Relationship Between PET Variables and Outcome, Adjusted for Age
| Variable | Relative hazard | 95% confidence interval | P |
| MFR < 2.11 | 2.93 | 1.30%–6.65% | 0.009 |
| Abnormal SSS > 4 | 2.51 | 1.24%–5.10% | 0.011 |
| Stress myocardial flow < 1.90 mL/min/g | —* | 0.09 | |
| Stress left ventricular ejection fraction < 45% | —* | 0.10 |
↵* Variables that were removed from final model.
All models were adjusted for age as stratification factor. Patients were divided into 3 equal groups based on age. Cutoffs for groups were 24–51, 52–62, and 63–88. P value denotes level of significance that led to exclusion of variables.