TABLE 3.

Diagnostic performance of serum biotin

CASES VS. CONTROLS	ACUTE VS. CHRONIC TELOGEN EFFLUVIUM
Best cutoff
3.59	3.94
Sensitivity (%)
50.0	50.0
Specificity (%)
45.0	42.5
PPV (%)
73.2	30.3
NPV (%)
23.1	63.0
Accuracy (%)
48.8	45.0
AUC
0.52	0.43

AUC: area under receiver operating characteristic curve; NPV: negative predictive value; PPV: positive predictive value