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Table 2 Cut-off values, sensitivity, specificity, and AUC* for egg-specific IgE, IgG 4 , and IgE/IgG 4

From: Predictive value of IgE/IgG4 antibody ratio in children with egg allergy

 

IgE

IgG4

IgE/IgG4

Cut-off value

8.9 (kUA/L)

1.93 (mgA/L)

13.63

Sensitivity (%)

68.3

53.3

83.3

Specificity (%)

68.9

88.3

80.0

Positive predictive value (%)

74.5

77.4

84.7

Negative predictive value (%)

62

71.4

78.3

AUC* (%)

0.697

0.724

0.847

  1. *Area under the curve.