Impact of the COVID-19 Epidemic on Inhalant Allergen Sensitization in Children

Table 3

Difference in inhaled allergen sIgE grade before and during COVID-19 ((n) %).

Allergens	Before COVID-19		During COVID-19		χ^2	P
	Lower group n (%)	High group n (%)	Lower group n (%)	High group n (%)
d1	509 (46.3)	591 (53.7)	649 (40.3)	962 (59.7)	9.576	0.002
d2	331 (51.6)	310 (48.4)	522 (37.0)	890 (63.0)	39.063	<0.001
e2	303 (98.1)	6 (1.9)	1,601 (96.2)	63 (3.8)	2.612	0.106
mx2	258 (97.7)	6 (2.3)	1,670 (99.2)	13 (0.8)	5.316	0.021
Sycamore	28 (100.0)	0 (0.0)	886 (99.6)	4 (0.4)	0.126	0.722
e1	20 (90.0)	2 (9.1)	796 (98.0)	16 (2.0)	5.143	0.023
w1	65 (100.0)	0 (0.0)	640 (100.0)	0 (0.0)	—	—
elm	8 (100.0)	0 (0.0)	382 (99.7)	1 (0.3)	0.021	0.885
w6	68 (95.8)	3 (4.2)	464 (98.5)	7 (1.5)	2.556	0.110
i6	135 (97.8)	3 (2.2)	385 (98.2)	7 (1.8)	0.083	0.773
w14	25 (96.2)	1 (3.8)	8 (100.0)	0 (0.0)	0.317	0.573
t70	20 (100.0)	0 (0.0)	9 (100.0)	0 (0.0)	—	—
u80	19 (95.0)	1 (5.0)	206 (99.5)	1 (0.5)	4.261	0.039
f37	2 (100.0)	0 (0.0)	2 (100.0)	0 (0.0)	—	—

Note. This table shows the proportion of the number of positives for the allergen in the lower group and high group; “—” indicates that there are no data for this item. Abbreviations: Dermatophagoides pteronyssinus (d1), Dermatophagoides farinae (d2), dog hair (e2), cat hair (e1), cockroaches (i6), mulberry (t70), sycamore pollen (sycamore), elm pollen (elm), grass pollen (u80), mugwort pollen (w6), common ragweed pollen (w1), amaranth (w14), green oysters (f37), and mold (mx2).