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Table 3 Sensitivity, Specificity and Youden index of serum calcium, PTH, Calcium×PTH and Pfindex in diagnosis of NPHPT

From: New parathyroid function index for the differentiation of primary and secondary hyperparathyroidism: a case-control study

 

Sensitivity (%)

Specificity (%)

Youden index

PFindex> 34

94.4

94.6

0.890

Calcium> 2.45

91.7

89.2

0.809

PTH > 11.71

94.4

75.7

0.701

Calcium*PTH > 31.73

91.7

86.5

0.782

Ca/P > 2.71

82.2

91.9

0.741

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BMC Endocrine Disorders

ISSN: 1472-6823

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