Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for reperfusion, using the composite variable q (probability of reperfusion)
| Probability of reperfusion (q) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
| 0.20 | 98 | 14 | 77 | 67 |
| 0.40 | 97 | 31 | 81 | 75 |
| 0.55 | 90 | 52 | 85 | 63 |
| 0.60 | 87 | 66 | 88 | 63 |
| 0.77 | 76 | 90 | 96 | 55 |
| 0.80 | 73 | 93 | 97 | 54 |
| 0.95 | 30 | 97 | 97 | 32 |
Values for q were calculated from the first hour increase rate of plasma fatty acid binding protein (FABP) and enzymatic infarct size according to the equation:
Log (q/1−q) = 1.6542 + 0.0132 × (first hour increase rate of FABP) − 0.4054 × (QHBDH72), where QHBDH72 = cumulative release of α hydroxybutyrate dehydrogenase in the first 72 hours.