Skip to main content
. 2015 Sep 14;19(1):330. doi: 10.1186/s13054-015-1057-8

Table 2.

Receiver operating characteristic (ROC) curve analysis of the different variables at 8 h (T8) to predict mortality at 30 days

Variable ROC area 95 % CI Cutoff value Sensitivity Specificity
Lactate, mmol/L 0.693* 0.625, 0.756 3.6 35.71 94.83
ScvO2, % 0.669* 0.599, 0.733 70 42.86 83.33
P(v-a) CO2 0.596* 0.525, 0.664 6 42.86 70.11
PI 0.835 0.777, 0.884 0.6 60.71 89.66

P(v-a)CO 2, difference between central venous and arterial PCO2 (mmHg), PI peripheral perfusion index measured by pulse oximetry, ScvO 2 central venous O2 saturation

*P <0.05 for comparison of PI vs ScvO2, P(v-a) CO2, and lactate