Table 1 Patient and cardiac arrest characteristics by trial arm (paramedic reported)
|  |  | Arm A 100% oxygen (n = 17) | Arm B titrated oxygen (n = 18) | Total (n = 35) |
|---|---|---|---|---|
Sex | Female n (%) | 5 (29) | 5 (28) | 10 |
Male n (%) | 12 (71) | 13 (72) | 25 | |
Age (mean, years) | Â | 64 | 70 | 67 |
Witnessed | No n(%) | 3 (18) | 1 (6) | 4 |
Yes n(%) | 14 (82) | 17 (94) | 31 | |
EMS witnessed | No n(%) | 15 (88) | 9 (50) | 24 |
Yes n(%) | 2 (12) | 9 (50) | 11 | |
Bystander cardiopulmonary resuscitation | EMS witnessed n(%) | 2 (12) | 9 (50) | 11 |
No n(%) | 4 (24) | 4 (22) | 8 | |
Yes n(%) | 11 (64) | 5 (28) | 16 | |
First monitored rhythm | Shockable n (%) | 6 (35) | 10 (56) | 16 |
Non shockable n (%) | 10 (59) | 6 (33) | 16 | |
Missing n (%) | 1 (6) | 2 (11) | 3 |