Table 2

Receiver operator characteristics area under the curve (AUC)

BiomarkerAUC95% CIOptimal cut-off*
Lactate0.720.68 to 0.77>3.1 mmol/l
WBC0.670.62 to 0.71>14.1 ×109/l
CRP0.660.61 to 0.71>20 mg/l
  • * Equal value given to sensitivity and specificity.

  • AUC, area under the curve; CRP, C-reactive protein; WBC, white blood cell count.