Table 3: Prognostic performance for copeptin in Day 1 and Day 3 to predict mortality (n= 24 vs. n=82).

Copeptin

AUC

p

95% C.I

Cut off#

Sensitivity

Specificity

PPV

NPV

Day 1

0.811

<0.001*

0.725 - 0.898

>25.4

87.50

70.73

46.7

95.1

Day 3

0.928

<0.001*

0.876 - 0.981

>26.1

100.0

73.17

52.2

100.0

AUC: Area Under a Curve; p value: Probability value; CI: Confidence Intervals; NPV: Negative predictive value; PPV: Positive predictive value.

*: Statistically significant at p ≤ 0.05.

#Cut off was choose according to youden index.