Table 5.

Cutoff value of serum lactate and RDW at different time interval from receiver operating characteristics curve

Test result variable	Area	P	Cutoff value	Sensitivity	Specificity
Lactate 0 h	0.548	0.570	6.85	54.5	50.0
RDW 0 h	0.874	0.000	15.0	86.0	81.2
Lactate 6 h	0.631	0.083	2.2	84.6	73.3
RDW 6 h	0.884	0.042	15.35	90.9	88.7
Lactate day 1	0.848	0.053	3.0	84.6	73.3
RDW day 1	0.947	0.027	15.4	90.9	88.7
Lactate day 2	0.967	<0.001	1.95	97.7	85.5
RDW day 2	0.944	<0.001	15.5	97.5	85.7
Lactate day 3	0.983	<0.001	1.78	95	85.7
RDW day 3	0.954	<0.001	16.0	92.7	92.9

P value of <0.05 considered as significant