Table 1 Characteristics of participants

From: Allergens sensitization among children with allergic diseases in Shanghai, China: age and sex difference

	Number of subjects	Percentage (%)
Age group
1 month–1 years	2373	5.9
> 1–3 years	5517	13.8
> 3–6 years	17,689	44.3
> 6–12 years	12,893	32.3
> 12–18 years	1454	3.6
Sex
Male	24,057	60.3
Female	15,869	39.7
Season
Spring (March–May)	11,003	27.6
Summer (June–August)	13,052	32.7
Autumn (September–November)	9412	23.6
Winter (December–February)	6459	16.2
Diagnosis
Rhinitis	17,336	43.4
Eczema/atopic dermatitis	8523	21.3
Urticaria	5348	13.4
Asthma	4193	10.5
Conjunctivitis	915	2.3
Food allergy	715	1.8
Multiple allergic disease^a	2896	7.3

^aA combination of 2 or more allergic diseases

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