Table 1. Demographic and clinical characteristics of patients.

	N (%)
Total number of subjects	1,353
Total number of immediate-type FA cases	1,661
Gender, Male	842 (62.2)
Age at first symptom of FA (median age)	13 months
<2 years	1,073 (71.1*)
2–6 years	331 (21.9*)
7–12 years	76 (5.0*)
13–18 years	29 (1.9*)
Family history of allergic diseases	692 (51.1)
History of concurrent allergic diseases
Atopic dermatitis	837 (61.9)
Allergic rhinitis	262 (19.4)
Asthma	155 (11.5)
Allergic conjunctivitis	65 (4.8)
Chronic urticaria	22 (1.6)
Drug allergy	15 (1.1)

^*Percentages were calculated based on 1,509 cases of immediate-type FA, since only in 1,509 out of 1,661 cases information regarding the age at first symptom of FA was available.