Table 1. Characteristics of the Toronto OHCA residents 20 years and older attended by EMS, calendar year 2010.
| Characteristic | Number (percent) |
|---|---|
| SEX | |
| Female | 507 (37.2) |
| Male | 856 (62.8) |
| missing | 1 |
| AGE (years) | |
| Females | |
| median | 78 |
| range (min-max) | 21–103 |
| Males | |
| median | 73 |
| range (min-max) | 21–101 |
| OHCA EVENT LOCATION* | |
| Private residences (apartment, condominium, house, townhouse, nursing home) | 1,219 (90.1) |
| Other (roads, public locations, offices, schools, sports venues, industrial facilities, not specified) | 134 (9.9) |
| missing | 11 |
| BYSTANDER WITNESSED | |
| Yes | 571 (41.9) |
| No | 793 (58.1) |
| INITIAL HEART RHYTHM | |
| VF, VT, AED shock** | 228 (17.3) |
| PEA, asystole, not shockable | 1,092 (82.7) |
| missing | 44 |
| SURVIVAL TO HOSPITAL DISCHARGE | |
| Yes | 90 (6.6) |
| No | 1,269 (93.4) |
| missing | 5 |
| Total number of patients | 1,364 |
AED-automated external defibrillator, PEA-pulseless electrical activity, VF-ventricular fibrillation, VT-pulseless ventricular tachycardia.
* Not always related to the place of patients’ residence.
** There were no electrocardiogram recordings from bystander-applied automatic AEDs and these were recorded as either AED shock or no shock.