Table 1.

Demographic information

Characteristics	Total (n = 1725)	Cases (n = 726)	Control (n = 999)	p value
Female, count (%)	757 (43.88%)	338 (46.56%)	419 (41.94%)	0.063
Mean age in years (±SD)	9.08 (5.77)	8.01 (4.84)	9.85 (6.25)	<0.001
Mean African ancestry (±SD)	0.757 (0.16)	0.761 (0.16)	0.753 (0.17)	0.328
Comorbidities:
Asthma	1216(70.5%)	516 (71.07%)	700 (70.07%)	0.69
AR	863 (50%)	398 (54.78%)	465 (45.81%)	<0.01
FA	181 (10.5%)	109 (15.35%)	72 (7.09%)	<0.001

AR, allergic rhinitis; FA, food allergy.