表 3. Differences in positivity rates of allergen-specific IgE between males and females before and after sexual maturation.

性成熟前后男女在过敏原特异性IgE阳性率上的差异

Sex	n	At least one food allergen	At least one aeroallergen	At least one allergen
Males before sexual maturation (0-16 yr.)	3609	33.06%	43.64%	58.08%
Females before sexual maturation (0-14 yr.)	2469	34.59%	39.69%	56.54%
χ 2		1.54	9.38	1.42
P		0.224	0.002	0.235
Sexual maturation of males (≥17 yr.)	26380	16.22%	18.13%	26.90%
Sexual maturation of females (≥15 yr.)	25093	15.26%	20.00%	28.19%
χ 2		9.10	29.18	10.76
P		0.003	<0.001	0.001