Table 3.
Clinical outcomes of patients receiving cardiopulmonary resuscitation (CPR) outside hospital: 233 patients during run-in phase of trial and 1586 during evaluable period*. Values are numbers (percentages) of patients unless stated otherwise
| Outcome | Run-in phase (n=233) | Evaluable period | Difference of feedback-on from feedback-off | |||
|---|---|---|---|---|---|---|
| Feedback-off (n=771) | Feedback-on (n=815) | Average change in cluster percentages (95% CI) | P value | |||
| Prehospital return of spontaneous circulation | 106 (45) | 345 (45) | 361 (44) | 0.1 (−4.4 to 4.6) | 0.962 | |
| Transported to emergency department or hospital | 156 (67) | 438 (57) | 461 (57) | −1.6 (−4.5 to 1.4) | 0.298 | |
| With pulse at arrival at emergency department | 72 (31) | 243 (32) | 260 (32) | −0.8 (−4.9 to 3.4) | 0.713 | |
| Survival for ≥1 day | 65 (28) | 213 (28) | 234 (29) | 0.4 (−4.6 to 5.4) | 0.862 | |
| Survival to hospital discharge | 27 (12) | 96 (12) | 92 (11) | −1.5 (−3.9 to 0.9) | 0.206 | |
| Discharge from hospital awake | 20 (9) | 78 (10) | 84 (10) | −0.2 (−2.5 to 2.1) | 0.855 | |
*Trial of CPR provided by emergency medical services with monitor-defibrillator providing real-time feedback on CPR process (“feedback-on”) or not providing feedback (“feedback-off”).