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Table 3 Performance of the PRESERVE score in the original and validation cohorts

From: Prediction of mortality in adult patients with severe acute lung failure receiving veno-venous extracorporeal membrane oxygenation: a prospective observational study

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)

  1. aThe 95% CI could not be calculated. CI, confidence interval; ECMO, extracorporeal membrane oxygenation; PSEP, prognostic separation index; UKR, University Medical Center Regensburg.
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