Table 2 Characteristics of cases and controls
From: An automated CPR device compared with standard chest compressions for out-of-hospital resuscitation
Characteristics | A-CPR | C-CPR | P Value | |
|---|---|---|---|---|
n = 66 | n = 220 | |||
Age median [IQR](years) | 69 [53–78] | 71 [55–77.5] | 0.53* | |
Gender Male n(%) | 36 (55) | 135 (61) | 0.32# | |
Bystander CPR n(%) | 33 (54) | 127 (62) | 0.25# | |
Initial Rhythm | ||||
Asystole n(%) | 29 (44) | 88 (40) | 0.50^ | |
VF/VT n(%) | 20 (30) | 78 (36) | ||
PEA n(%) | 8 (12) | 28 (13) | ||
Other n(%) | 8 (12) | 26 (11) | ||
unknown n(%) | 1 (2) | 0 | ||
Witnessed status | ||||
Witnessed n(%) | 39 (59) | 133 (60) | 0.98# | |
Witnessed by EMS n(%) | 8 (12) | 26 (12) | ||
Not witnessed n(%) | 19 (29) | 61 (28) | ||
Precipitating Event | ||||
Presumed cardiac n(%) | 57 (86) | 211 (96) | 0.02^ | |
Respiratory n(%) | 5 (7) | 6 (3) | ||
Neurological n(%) | 1 (2) | 0 | ||
Overdose n(%) | 2 (3) | 3 (1) | ||
Hanging n(%) | 1 (2) | 0 | ||
EMS Response time median [IQR] | 0.73* | |||
Time from arrival to A-CPR activation | NA | |||
Overall survival to hospital n(%) | 17 (26) | 43 (20) | 0.23# | |
Overall survival to hospital discharge n(%) | 2 (3) | 15 (7) | 0.38^ | |