Table 3. Qualitative Comparison of ImmunoCAP® and PROTIA™ Specific IgG4®.

Allergens	ImmunoCAP®		PROTIATM Specific IgG4®		Agreement rate (%)	κ value
	Positive (n)	Negative (n)	Positive (n)	Negative (n)
Dermatophagoides pteronyssinus	69	107	79	97	94.3	0.884†
Dermatophagoides farinae	91	144	93	142	97.4	0.946†
Cat dander	18	12	16	14	93.3	0.865†
Dog dander	21	5	21	5	92.3	0.752†
Birch pollen	5	5	5	5	100.0	1*
Oak pollen	2	5	2	5	100.0	1*
Ragweed pollen	6	1	6	1	100.0	1*
Mugwort pollen	1	4	1	4	100.0	1*
Alternaria alternata spore	1	35	1	35	100.0	1†
Egg white	12	12	12	12	100.0	1†
Casein	21	10	22	9	96.8	0.924†
Wheat	15	9	15	9	100.0	1†
Peanut	7	16	9	14	91.3	0.810†
Walnut	12	21	17	16	84.8	0.699†
Crab	0	16	0	16	100.0	N/A
Shrimp	1	15	3	13	87.5	0.448*
Apple	6	9	7	8	93.3	0.865†
Peach	11	6	10	7	94.1	0.876†
Total	299	432	319	412	95.6	0.910†

N/A, not applicable.

κ=Cohen's kappa coefficient, κ values were categorized as almost perfect (0.8–1.0), substantial (0.6–0.8), moderate (0.4–0.6), fair (0.2–0.4), or poor correlations (<0.2).

^*p<0.05, ^†p<0.001.