Table 2. Serum allergen-specific IgE data for the study population.

	Number of the subjects (%)
Specific IgE concentration classa	0	1	2	3	4	5	6
Egg white	14,260 (99.0)	101 (0.7)	45 (0.3)	2 (0.01)	0 (0)	0 (0)	0 (0)
HDM	7,606 (52.8)	809 (5.6)	1,639 (11.4)	2,356 (16.4)	1,352 (9.4)	474 (3.3)	172 (1.2)
JCP	6,453 (44.8)	708 (4.9)	1,984 (13.8)	2,900 (20.1)	1,629 (11.3)	549 (3.8)	185 (1.3)
Animal dander	11,438 (79.4)	948 (6.6)	1,413 (9.8)	454 (3.2)	118 (0.8)	31 (0.2)	6 (0.04)
Moth	10,331 (71.7)	1,345 (9.3)	2,146 (14.9)	557 (3.9)	29 (0.2)	0 (0)	0 (0)

IgE, immunoglobulin E.

Values are given in numbers and percentages.

^aclass 0: <0.35, class 1: 0.35–0.69, class 2: 0.70–3.49, class 3: 3.5–17.49, class 4: 17.5–49.99, class 5: 50–99.99, class 6: ≥100 (UA/mL).