Table 3.
Sub-group analysis of initially shockable out-of-hospital cardiac arrest cases.
| Variable | Urban (n = 245) | Rural (n = 68) | P-value |
| Age (years) | 0.378 | ||
| Mean | 64.5 | 66.8 | |
| SD | 15.8 | 14.5 | |
| Male sex | 0.02* | ||
| Amount | 185 | 60 | |
| Percentage | (75.5%) | (88.2%) | |
| Aetiology breakdown | Asphyxia | N/A | |
| 1 | 0 | ||
| (3.1%) | (0%) | ||
| Cardiac | 0.98 | ||
| 238 | 66 | ||
| (86.8%) | (97.0%) | ||
| Drug overdose | N/A | ||
| 1 | 0 | ||
| (4.2%) | (0%) | ||
| Exsanguination | N/A | ||
| 0 | 0 | ||
| (0%) | (0%) | ||
| Other (non-cardiac) | N/A | ||
| 2 | 0 | ||
| (3.2%) | (0%) | ||
| Submersion | 0.33 | ||
| 1 | 1 | ||
| (0.3%) | (1.5%) | ||
| Trauma | 0.62 | ||
| 2 | 1 | ||
| (2.2%) | (1.5%) | ||
| Bystander PAD | 18 | 8 | 0.24 |
| (7.3%) | (11.8%) | ||
| Bystander CPR | 200 | 56 | 0.89 |
| (81.6%) | (82.4%) | ||
| Mean ambulance response time (MM:SS) | < 0.001* (mean) | ||
| Mean time | 07:55 | 10:45 | |
| SD | 5.5 | 12.3 | |
| Median | 6.7 | 9.5 | |
| IQR | 4.7–8.5 | 6.9–14.0 | |
| Advanced airway management | 224 | 61 | 0.66 |
| (91.4%) | (89.7%) | ||
| ALS drugs | 170 | 51 | 0.37 |
| (69.4%) | (75.0%) | ||
| ROSC at anytime | 171 | 39 | 0.05* |
| (69.8%) | (57.4%) | ||
| ROSC at hospital | 151 | 31 | 0.02* |
| (61.6%) | (45.6%) |
*Statistically significant result p = < 0.05.
ALS: advanced life support; CPR: cardiopulmonary resuscitation; IQR: interquartile range; PAD: public access defibrillator; ROSC: return of spontaneous circulation; SD: standard deviation.