Table 3.
Subgroup Analysis on the Primary End Point, ie, the Proportion of Patients in Sinus Rhythm After 4 Hours
| PB Waveform | BTE Waveform | Ratio (95% CI) | P Value | |
|---|---|---|---|---|
| Sinus rhythm after 4 hours | ||||
| Atrial fibrillation patients (n=116) | 35 (58) | 47 (84) | 1.4 (1.1–1.8) | 0.002 |
| Atrial flutter patients (n=18) | 7 (77) | 9 (100) | 1.3 (0.9–1.9) | 0.13 |
| Patient receiving amiodarone (n=24) | 2 (33) | 16 (89) | 2.7 (0.9–8.4) | 0.05 |
| Patients not receiving amiodarone (n=110) | 40 (64) | 40 (85) | 1.4 (1.1–1.7) | 0.01 |
Data are numbers of successful cardioversions (%) and estimates are reported with their corresponding 95% CI. BTE indicates biphasic truncated exponential; PB, pulsed biphasic.