Characteristics | Missing data | Number of patients |
---|---|---|
All patients with OHCA (n) | Â | 10,488 |
 Age (median, IQR) |  | 69 (54–79) |
 Gender (% male) |  | 66 |
Treated by ambulance personnel (n) | Â | 8339 |
Non traumatic arrests (n) | Â | 7551 |
Age 18–75 (n) | 5 | 4596 |
 Age (median, IQR) |  | 62 (52–69) |
 Gender (% male) |  | 71 |
Witnessed collapse (n) | 106 | 2772 |
Treated by ambulance personnel within 15 min (n) | 35 | 2241 |
CPR duration (n) | 277 | Â |
  <  15 min |  | 716 |
 15–29 min |  | 528 |
  >  30 min |  | 720 |