Describing organ dysfunction in the intensive care unit: a cohort study of 20,000 patients

Table 5 Area under the ROC and PR curves for predictors of hospital mortality

Predictor	Number of patients	Area under the ROC curve (area under the PR curve)
Predictor	Number of patients	Predictor alone	Admission SOFA score	Predictor + admission SOFA score	Brier score**
Admission SOFA score	20,007	0.77 (0.57)	–	–	0.152
Maximum SOFA score	20,007	0.79 (0.58)	–	–	0.147
Highest SOFA score	20,007	0.81 (0.63)	–	–	0.140
Difference between day 1 and maximum SOFA score	20,007	0.57 (0.37)	0.77 (0.57)	0.79 (0.59)	0.146
Difference between day 1 and highest SOFA score	20,007	0.58 (0.38)	0.77 (0.57)	0.81 (0.63)	0.139
Difference between day 1 and day 2*	15,736	0.57 (0.31)	0.73 (0.47)	0.77 (0.52)	0.143
Difference between day 1 and day 3*	12,650	0.60 (0.33)	0.70 (0.42)	0.76 (0.50)	0.145
Difference between day 1 and day 4	10,206	0.61 (0.36)	0.67 (0.39)	0.75 (0.50)	0.150
Difference between day 1 and day 5	8326	0.62 (0.37)	0.64 (0.38)	0.74 (0.49)	0.157
Difference between day 2 and day 3*	12,648	0.56 (0.29)	0.70 (0.42)	0.71 (0.44)	0.154

*Based on patients who had SOFA scores on both days
**Based on “Predictor alone” for Admission SOFA score, Maximum SOFA score, and Highest SOFA score and based on “Predictor + admission SOFA score” for all other predictors
ROC receiver operating characteristic, PR precision-recall, SOFA Sequential Organ Failure Assessment

ISSN: 1364-8535