Table 4.

Diagnostic performances of changes in resistivity index to predict increase in urine output

Increase in urine output	Cut-off on ROC curve	Se	Sp	NPV	PPV	NLR	PLR	Youden’s Indice
0.1 ml/kg/hour	3.3 %	59 %	69 %	62 %	66 %	0.59	1.90	0.28
0.2 ml/kg/hour	3.3 %	63 %	67 %	64 %	67 %	0.55	1.91	0.30
0.3 ml/kg/hour	3.3 %	64 %	65 %	63 %	66 %	0.55	1.83	0.29

Results are expressed as percentages or absolute values as appropriate. NLR negative likelihood ratio, NPV negative predictive value, PLR positive likelihood ratio, PPV positive predictive value, ROC receiver operating characteristic, Se sensitivity, Sp specificity