Table 3.
Performance of the PRESERVE score in the original and validation cohorts
| PRESERVE score class |
Original study population |
UKR ECMO registry |
||
|---|---|---|---|---|
| Number (%) | Mortality rate up to six months post-ICU | Number (%) | In-hospital mortality rate | |
| 0 to 2 |
34 (25.0%) |
3% |
35 (12.1%) |
11% |
| 3 to 4 |
38 (27.9%) |
21% |
90 (31.1%) |
28% |
| 5 to 6 |
26 (19.1%) |
46% |
97 (33.6%) |
40% |
| ≥7 |
38 (27.9%) |
84% |
67 (23.2%) |
64% |
| Total |
136 (100.0%) |
40% |
289 (100.0%) |
38% |
| PSEP | 81%a | 53% (95% CI 37–69) | ||
aThe 95% CI could not be calculated. CI, confidence interval; ECMO, extracorporeal membrane oxygenation; PSEP, prognostic separation index; UKR, University Medical Center Regensburg.