Simulated arrhythmia detection data and analysis
| Simulated arrhythmia | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ventricular tachycardia | Sinus bradycardia | Ventricular tachycardia+sinus bradycardia | |||||||||||||
| Programme phase | Non-detection | Detection | Sensitivity, % (n)* | p† | Non-detection | Detection | Sensitivity, % (n)* | p† | Non-detection | Detection | Sensitivity, % (n)* | p† | |||
| Pre-intervention (Npre=20) | 9 | 1 | 10 (10) | ⌉ 0.077 ⌋ | ⌉ | | 0.006 | | ⌋ | 10 | 0 | 0 (10) | ⌉ 0.333 ⌋ | ⌉ | | 0.210 | | ⌋ | 19 | 1 | 5 (20) | ⌉ 0.031 ⌋ | ⌉ | | 0.001 | | ⌋ |
| Intervention Implementation (Interim) (Nint=10) | 2 | 3 | 60 (5) | 4 | 1 | 20 (5) | 6 | 4 | 40 (10) | ||||||
| Post-intervention (Npost=20) | 2 | 8 | 80 (10) | 7 | 3 | 30 (10) | 9 | 11 | 55 (20) | ||||||
*Study sessions only assessed for simulated arrhythmia detection, that is, there were no ‘non-event’ sessions to elicit true negative alarms and false positive alarms for system specificity analysis.
†2-Tailed Fisher's exact test, α=0.05.