Skip to main content

Table 4 Performance of classification tree, original SAPS II, and recalibrated SAPS II in patients in the independent validation set who fulfill the entry criteria of SAPS II model (n = 1,594)

From: Identification of high-risk subgroups in very elderly intensive care unit patients

 

Classification tree

SAPS II

Recalibrated SAPS II

ROC-AUC ± SD

0.72 ± 0.01

0.75 ± 0.01

0.75 ± 0.01

Brier score

0.19

0.18

0.18

Threshold PPV

   

   0.5

0.64 (348)

0.66 (365)

0.69 (308)

   0.7

0.83 (144)

0.76 (218)

0.79 (144)

   0.8

0.85 (129)

0.80 (137)

0.84 (87)

  1. PPV, positive predictive value; ROC-AUC, area under the receiver operating characteristic curve; SAPS II, Simplified Acute Physiology Score II; SD, standard deviation.
Back to article page

Critical Care

ISSN: 1364-8535