Table 3.

Receiver operating characteristics curves at admission to the study

Variable	Area mortality	Area complications
Simplified Acute Physiology Score II	0.705	0.678
Blood lactate (mEq/l)	0.583	0.646
Arterial bicarbonate (mEq/l)	0.452	0.375
Mean arterial pressure (mmHg)	0.325	0.377
PaO2/FiO2(mmHg)	0.235	0.249
Urine output (ml)	0.373	0.422
Heart rate (beats/min)	0.560	0.573

PaO₂/FiO₂, partial pressure of arterial oxygen/inspired fraction of oxygen ratio.