| Witnessed by | Expected | Observed | Chi-Square |
---|---|---|---|---|
No Intervention (n = 258, df = 2) | Healthcare Worker | 111 | 47 (↓) | < 0.001 |
Family Member | 15 | 51 (↑) | ||
Other Lay Person | 133 | 160 (↑) | ||
CPR Only (n = 403, df = 2) | Healthcare Worker | 173 | 127 (↓) | < 0.001 |
Family Member | 23 | 45 (↑) | ||
Other Lay Person | 207 | 231 (↑) | ||
AED Only (n = 60, df = 2) | Healthcare Worker | 26 | 19 (≈) | 0.017 |
Family Member | 3 | 0 (≈) | ||
Other Lay Person | 31 | 41 (≈) | ||
CPR + AED (n = 1384, df = 2) | Healthcare Worker | 593 | 696 (↑) | < 0.001 |
Family Member | 79 | 25 (↓) | ||
Other Lay Person | 712 | 663 (↓) |