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Table 5 Clinical validation of novel mortality scores

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

Predicted risk

N

Mean predicted risk

Observed mortality risk

Clinical validation

PSEP (95% CI)

Model 1

    

57 (31 to 84)

<40%

159

22.7%

24.5%

75.5%a

 

40% to 80%

114

56.2%

54.5%

  

>80%

11

86.6%

81.8%

81.8%b

 

Total population

  

38.7%

  

Model 2

    

61 (43 to 80)

<40%

148

15.7%

19.6%

80.4%a

 

40% to 80%

94

56.9%

57.4%

  

>80%

21

87.1%

81.0%

81.0%b

 

Total population

  

38.0%

  
  1. aNegative predictive value for the low-risk group (<40%). bPositive predictive value for the high-risk group (>80%). CI, confidence interval; n, number of patients in risk group; PSEP, prognostic separation index.