Evaluation of Two Methods for Determination of CD64 as a Diagnostic Marker of Infection in Critically Ill Adults

Table 5

Characteristics of the Leuko64 test after checking for significant correlation with documented infection using logistic regression modeling.

	Leuko64
AUC	0.811 (0.698–0.925)
Cutoff	1.45
After categorization
TP	20
FP	10
TN	24
FN	2
Kappa	0.58 (0.43–0.73)
Accuracy	78.6% (78.0%–79.2%)
PPV	66.7% (65.2%–68.1%)
NPV	92.3% (91.8%–92.8%)

AUC: area under the curve; TP: true positive; FP: false positive; TN: true negative; FN: false negative; PPV: positive predictive value; NPV: negative predictive value.