Prognostic sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of ECG findings with regard to 30-day mortality
| Parameter | Sensitivity | Specificity | PPV | NPV |
| Atrial arrhythmia | 25 | 88 | 39 | 79 |
| Complete RBBB | 29 | 87 | 39 | 80 |
| Peripheral low voltage | 35 | 79 | 33 | 81 |
| Q in leads III and aVF, but not in II | 14 | 93 | 36 | 78 |
| ST elevation I, II, V4–V6 | 16 | 94 | 41 | 79 |
| ST depression I, II, V4–V6 | 49 | 62 | 28 | 81 |
Data are presented as %. RBBB: right bundle branch block.