Table 3.
Patient‐based arrhythmia detection results
| Asystole | Bradycardia | SRD | HVR | AF | |
|---|---|---|---|---|---|
| Patients with episodes in Holter‐ECG | 2 | 7 | 2 | 3 | 15 |
| Patients with episodes detected by ICM | 4 | 8 | 3 | 3 | 23 |
| True positive (TP) patients | 2 | 7 | 2 | 3 | 15 |
| False positive (FP) patients | 2 | 1 | 1 | 0 | 8 |
| False negative (FN) patients | 0 | 0 | 0 | 0 | 0 |
| True negative (TN) patients | 78 | 74 | 79 | 79 | 59 |
| Sensitivity = TP/(TP+FN) | 100% | 100% | 100% | 100% | 100% |
| Specificity = TN/(TN+FP) | 97.5% | 98.7% | 98.8% | 100% | 88.1% |
| Positive predictive value = TP/(TP+FP) | 50.0% | 87.5% | 66.7% | 100% | 65.2% |
| Negative predictive value = TN/(TN+FN) | 100% | 100% | 100% | 100% | 100% |
| Accuracy = (TP+TN)/(TP+TN+FP+FN) | 97.6% | 98.8% | 98.8% | 100% | 90.2% |
Note. The analysis included 82 patients with adjudicated Holter findings and ICM data (see Appendix 1 for details).
Abbreviations: AF = atrial fibrillation; ECG = electrocardiogram; ICM = insertable cardiac monitor; HVR = high ventricular rate; SRD = sudden ventricular rate drop.