Characteristics | Single dispatch centre (n = 2257) | Multiple dispatch centre (n = 4614) | Test value | p-value |
---|---|---|---|---|
First call to, n (%) | 14.5 | <0.001 | ||
1–8/1–1–2 FD emergency number | 1233 (54.6) | 2744 (59.5) | ||
1–5 EMS emergency number | 1024 (45.4) | 1870 (40.5) | ||
Age, mean (SD), y | 69 (15) | 68 (15) | –2.6 | 0.008 |
Male, n (%) | 1655 (73.3) | 3274 (71.0) | 4.3 | 0.038 |
Witness, n (%) | 1666 (73.8) | 3701 (80.2) | 32.3 | <0.001 |
Bystander witness | 1355 (60.0) | 3137 (68.0) | ||
EMS witness | 311 (13.8) | 564 (12.2) | ||
CPR by bystander witness, n (%) | 693 (30.7) | 1270 (27.5) | 7.5 | 0.006 |
Cardiac arrest occurred at home, n (%) | 1618 (71.7) | 3417 (74.1) | 10.5 | 0.015 |
Shockable rhythm, n(%) | 656 (29.1) | 1233 (26.7) | 94.7 | <0.001 |
Median time in min from call to | ||||
Arrival on scene | 10.8 | <0.001 | ||
First CPR attempted | 5 [0–11] | 8 [0–14] | 6.5 | <0.001 |
First shock attempted | 2.9 | 0.035 | ||
Initial admission to cath lab, n (%) | 115 (20.8) | 257 (28.8) | 11.7 | 0.001 |
Any ROSC, n (%) | 705 (31.3) | 1055 (22.9) | 55.7 | <0.001 |
Hospital admission alive, n (%) | 554 (24.6) | 891 (19.3) | 25.0 | <0.001 |