Table 2.
Characteristics of out-of-hospital cardiac arrest patients in top 10% of performing EMS agencies in Ohio (A–E).
| Agency ID | A | B | C | D | E | Top 10% agencies above mean (combined) | Other performing agencies |
|---|---|---|---|---|---|---|---|
| Age mean (IQR) * | 61 (51–73) | 57 (45–70) | 66 (62–72) | 68 (63–76) | 60 (46–72) | 59 (48–71) | 63 (52–76) |
| Location (%) * | n (%) | n (%) | |||||
| Home | 65.9 | 68.9 | 45.0 | 69.0 | 74.5 | 904 (67.7) | 1189 (71.8) |
| Nursing home/healthcare facility | 20.6 | 13.5 | 40.0 | 20.7 | 12.8 | 222 (16.6) | 262 (15.8) |
| In general public | 13.4 | 17.5 | 15.0 | 10.3 | 12.8 | 209 (15.7) | 204 (12.3) |
| Witnessed status (%) | n (%) | n (%) | |||||
| Unwitnessed | 56.5 | 52.3 | 35.0 | 34.5 | 42.6 | 706 (52.9) | 831 (50.2) |
| Bystander witnessed | 29.1 | 30.4 | 25.0 | 51.7 | 36.2 | 407 (30.5) | 568 (34.3) |
| EMS witnessed | 14.4 | 17.2 | 40.0 | 13.8 | 21.3 | 222 (16.6) | 256 (15.5) |
| CPR initiated by (%) | n (%) | n (%) | |||||
| EMS | 64.9 | 65.5 | 55.0 | 69.0 | 83.0 | 879 (65.8) | 1045 (63.1) |
| Bystander | 35.1 | 34.5 | 45.0 | 31.0 | 17.0 | 455 (34.2) | 610 (36.9) |
| Shockable rhythm (%) | n (%) | n (%) | |||||
| Yes | 21.0 | 17.8 | 20.0 | 34.5 | 12.8 | 256 (19.2) | 284 (17.2) |
| No | 79.0 | 82.2 | 80.0 | 65.5 | 87.2 | 1079 (80.8) | 1371 (82.8) |
| ROSC | 34.6 | 36.6 | 65.0 | 62.1 | 61.7 | 37.8 | 32.0 |
| Survival | 15.7 | 11.6 | 20.0 | 20.7 | 19.2 | 13.6 | 12.2 |
*
P<0.01
EMS, emergency medical service; IQR, interquartile range; CPR, cardiopulmonary resuscitation; ROSC, return of spontaneous circulation.