Table 3. Comparative outcomes for periods 1 and 2 (univariate analysis).
| Prognostic factor groups | Any ROSC | Admitted | Discharge alive | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Period 1 | Period 2 | p | Period 1 | Period 2 | p | Period 1 | Period 2 | p | |
| Resuscitation attempted, n (%) | 154 (41.9) | 199 (46.7) | 0.178 | 146 (39.7) | 217 (50.8) | 0.002 | 38 (10.3) | 73 (17.0) | 0.007 |
| Pathogenesis (presumed aetiology), n (%) | |||||||||
| Presumed traumatic aetiology, drowning and asphyxia | 18 (11.7) | 21 (10.6) | 0.934 | 18 (12.3) | 23 (10.6) | 0.717 | 3 (7.9) | 3 (4.1) | 0.577 |
| Medical (not cardiac), drug overdose | 24 (15.6) | 32 (16.1) | 0.122 | 21 (14.4) | 39 (18.0) | <0.001 | 5 (13.2) | 10 (13.7) | 0.159 |
| Presumed cardiac aetiology | 45 (29.2) | 68 (34.2) | 0.711 | 44 (30.1) | 69 (31.8) | 0.374 | 18 (45.4) | 42 (57.5) | 0.025 |
| Not documented aetiology | 67 (43.5) | 78 (39.2) | 0.755 | 63 (43.2) | 86 (39.6) | 0.143 | 12 (31.6) | 18 (24.7) | 0.43 |
| First monitored rhythm, n (%) | |||||||||
| Asystole | 60 (39.0) | 58 (29.1) | 0.397 | 52 (35.6) | 64 (29.5) | 0.486 | 4 (10.5) | 7 (9.6) | 0.327 |
| PEA | 46 (29.9) | 67 (33.7) | 0.027 | 47 (32.2) | 72 (33.2) | 0.006 | 9 (23.7) | 20 (27.4) | 0.057 |
| VF/VT | 48 (31.2) | 74 (37.2) | 0.578 | 47 (32.2) | 81 (37.3) | 0.059 | 25 (65.8) | 46 (63.0) | 0.26 |
| Arrest location, n (%) | |||||||||
| Ambulance | 26 (16.9) | 36 (18.1) | 0.487 | 25 (17.1) | 37 (17.1) | 0.244 | 6 (16.2) | 18 (24.7) | 0.036 |
EMS: Emergency Medical System. PEA: Pulseless Electrical Activity. VF/ VT: Ventricular Fibrillation/ Ventricular Tachycardia. CPR: Cardiopulmonary Resuscitation. AED: Automated External Defibrillator. Figures are shown in column percentages.