Table 4.
Multivariable logistic regression analysis for 30-day survival.
| Covariate | aOR (95% CI) | p-value |
|---|---|---|
| Nursing home resident | 0.20 (0.05, 0.92) | 0.038 |
| Age (years) | 0.94 (0.90, 0.97) | <0.001 |
| Male | 0.84 (0.48, 1.47) | 0.538 |
| Shockable first monitored rhythm | 14.8 (8.41, 26.2) | <0.001 |
| Presumed cardiac aetiology | 6.57 (0.85, 51.0) | 0.072 |
| Bystander-witnessed status | ||
| EMS-witnessed | Reference | |
| Bystander-witnessed | 0.08 (0.04, 0.16) | <0.001 |
| Unwitnessed | 0.01 (0.003, 0.03) | <0.001 |
| Bystander shock given | 5.23 (0.41, 66.7) | 0.202 |
| Bystander CPR | 1.26 (0.60, 2.66) | 0.540 |
| Response time (mins) | 0.98 (0.95, 1.01) | 0.260 |
aOR: adjusted odds ratio; CI: confidence interval; CPR: cardiopulmonary resuscitation; EMS: Emergency medical services.