Diagnostic Utility of Total IgE in Foods, Inhalant, and Multiple Allergies in Saudi Arabia

Table 2

Diagnostic value of total IgE (positive if >195 IU/mL) in food, inhalant, and multiple allergies.

Parameter	Food allergy ()		Inhalant allergy ()		Multiple allergies ()		All allergy types ()
Sensitivity	55.8%		59.6%		78.6%		61.3%
Specificity	83.9%		84.4%		41.8%		83.4%
PPV	54.4%		79.1%		19.7%		80.6%
NPV	84.6%		67.9%		91.5%		65.8%
+LR	3.820		3.465		1.35		3.692
−LR	0.479		0.527		0.51		0.464

PPV: positive predictive value; NPV: negative predictive value; +LR: positive likelihood ratio; −LR: negative likelihood ratio.