Table 4.

Comparison between methods for the values of sIgE and the odds for positive allergy diagnosis with the rise in sIgE in nonselected group of patients (N = 100)

Allergens	Assay system	Comparing two methods			Association with clinical features
		Median (IQR)	Z	P‐value	OR	95% Cl	P‐value
Aeroallergens
Birch	CAP	0.02 (0.01–0.12)	6.777	<0.0001	5.43	2.34–12.57	<0.0001
	IML	0.05 (0.05–0.05)			7.13	2.87–17.74	<0.0001
Cat dander	CAP	0.01 (0.01–0.06)	8.471	<0.0001	5.30	1.42–19.76	0.01199
	IML	0.05 (0.05–0.05)			5.56	1.51–20.40	0.0089
Common ragweed	CAP	0.05 (0.04–0.23)	1.333	0.1824	10.83	3.54–33.12	<0.0001
	IML	0.05 (0.05–0.05)			11.45	3.68–35.60	<0.0001
D. pteronyssinus	CAP	0.06 (0.02–28.35)	4.954	<0.0001	21.37	4.51–101.40	0.0001
	IML	0.05 (0.05–41.80)			20.62	4.59–92.56	<0.0001
Orchard grass	CAP	0.03 (0.01–0.89)	7.182	<0.0001	5.60	2.80–11.17	<0.0001
	IML	0.05 (0.05–1.62)			5.58	2.88–10.80	<0.0001
Food allergens
Egg white	CAP	0.03 (0.01–0.12)	8.182	<0.0001	417.22	2.36–73644	0.0206
	IML	0.05 (0.05–0.25)			1047.93	0.82–1333980	0.0536
Milk	CAP	0.05 (0.02–0.18)	0.203	0.8391	No positive clinical features
	IML	0.05 (0.05–0.05)
Peanut	CAP	0.03 (0.02–0.11)	4.014	<0.0001	4.22	0.90–19.82	0.0643
	IML	0.05 (0.05–0.05)			12.79	1.64–99.61	0.0137

OR (95% CI) for the positive diagnosis of allergy with each log point of sIgE.

CAP, UniCAP 100 FEIA; IML, IMMULITE 2000 3 g CLEIA; SD, standard deviation; OR, odds ratio; 95% Cl, 95% confidence interval.