Table 5.

C-statistics for several risk indicators for in-hospital mortality of medical intensive care patients

Parameter	Area under curve
NRBC, highest value	0.72
Leukocytes, highest value	0.61
Prothrombin time ratio, lowest value	0.73
Alanine aminotransferase, highest value	0.73
C-reactive protein, highest value	0.72
SAPS II, on admission	0.88
APACHE II, on admission	0.87
APACHE II, on admission + NRBC, highest valuea	0.91

Only data from the intensive care unit were considered. ^aThe APACHE II score was incremented under consideration of the NRBC concentration as follows: NRBC 0/μl: +0, NRBCs 1 to 100/μl: +4, NRBCs 101 to 200/μl: +8, NRBCs more than 200/μl: +12). APACHE II, Acute Physiology and Chronic Health Evaluation II; NRBC, nucleated red blood cell; SAPS II, Simplified Acute Physiology Score II.