RPS Scale
| Variables | Odds ratio (“the weighting”) | Alive 24 hours (%) | Total (number of patients in each category) |
|---|---|---|---|
| *Insufficient data. | |||
| Scale A Survival rates for CPR attempts beyond 15 minutes where the primary mode of arrest (respiratory/cardiac) is not known | |||
| PEA/Asystole + ≥70 years | 1 | 4.8 | 357 |
| PEA/Asystole + ≤69 years | 6 | 8.4 | 176 |
| VT/VF + ≥70 years | 7 | 14.1 | 142 |
| VT/VF + ≤69 years | 12 | 28.8 | 66 |
| Scale B Survival rates for CPR attempts beyond 15 minutes where the primary mode of arrest (respiratory/cardiac) is known | |||
| PEA/Asystole + ≥70 years + primary cardiac | 1 | 3.8 | 289 |
| PEA/Asystole + ≤69 years + primary cardiac | 6 | 6.1 | 131 |
| PEA/Asystole + ≥70 years + primary respiratory | 20 | 9.6 | 52 |
| PEA/Asystole + ≤69 years + primary respiratory | 25 | 16.7 | 36 |
| VT/VF + ≥70 years + primary cardiac | 7 | 12.1 | 132 |
| VT/VF + ≤69 years + primary cardiac | 12 | 28.3 | 60 |
| VT/VF + ≥70 years + primary respiratory | 26 | 28.6 | 7 |
| VT/VF + ≤69 years + primary respiratory | 31 | –* | –* |