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. 2012 May 18;16(3):R89. doi: 10.1186/cc11351

Table 3.

Reclassification results for in-hospital and ICU mortality

Hospital mortality ICU mortality
SAPS SAPS and RDW SAPS versus SAPS/RDW P SAPS SAPS and RDW SAPS versus SAPS/RDW P

Model χ2 (log likelihoods) 1,505 1,831 326 < 0.0001 1,539 1,664 124 < 0.0001
Area under the ROC curve 0.746 0.774 0.028 < 0.001 0.793 0.805 0.012 < 0.001

Events
 Upward reclassification 362 197
 No reclassification 1,214 947
 Downward reclassification 309 153

No events
 Upward reclassification 1,532 1,376
 No reclassification 9,849 12,412
 Downward reclassification 4,046 2257

Net reclassification improvement 0.175 (SE 0.015) < 0.0001 0.090 (SE 0.049) < 0.0001


Integrated sensitivity 0.20 0.23 0.021 < 0.0001 0.19 0.20 0.01 < 0.0001
Integrated specificity 0.099 0.096 -0.0026 < 0.0001 0.07 0.06 -0.0008 < 0.0001
Integrated discrimination improvement 0.023 (SE 0.001) < 0.0001 0.011 (SE 0.001) < 0.0001