TABLE 1.

Demographic Features of Total and Allergic Disease-Specific Cohorts

Variable	All		AD			IgE-FA			Asthma			AR			EoE
	n	%	n	%	P	n	%	P	n	%	P	n	%	P	n	%	P
Sexa
Male	111 577	51.1	11 983	53.4	—	5100	58.6	—	26 015	59.3	—	24 002	55.8	—	166	70.9	—
Female	106 907	48.9	10 454	46.6	<.0001	3606	41.4	<.0001	17 837	40.7	<.0001	19 031	44.2	<.0001	68	29.1	<.0001
Raceb
White	103 942	47.6	6778	30.2	—	4234	48.6	—	17 141	39.1	—	18 725	43.5	—	141	60.3	—
Black	69 796	31.9	11 489	51.3	<.0001	2861	32.9	<.01	19 477	44.4	<.0001	18 200	42.3	<.0001	54	23.1	<.01
Asian or Pacific Islander	6210	2.8	908	4.0	<.0001	513	5.9	<.0001	1098	2.5	NS	1092	2.5	NS	13	5.5	NS
Unknown	14 393	6.6	1439	6.4	<.0001	577	6.6	<.0001	2761	6.3	NS	2457	5.7	<.0001	14	6.0	<.05
Other	24 144	11.1	1823	8.1	<.0001	521	6.0	NS	3376	7.7	NS	2560	6.0	<.0001	12	5.1	NS
Ethnicity
Non-Hispanic	166 521	76.2	18 074	80.5	—	7657	88.0	—	35 125	80.1	—	36 463	84.7	—	202	86.3	—
Hispanic	22 195	10.2	2102	9.4	<.0001	516	5.9	<.0001	4497	10.3	<.0001	3871	9.0	<.0001	24	10.3	NS
Other	29 769	13.6	2261	10.1	<.0001	533	6.1	<.0001	4231	9.6	<.0001	2700	6.3	<.0001	8	3.4	<.01
Birth year
Pre-2000	3337	1.5	187	0.8	—	36	0.4	—	676	1.5	—	505	1.2	—	2	0.9	—
2000–2004	41 898	19.2	5226	23.3	<.0001	1294	14.9	<.05	9877	22.5	<.0001	9417	21.9	NS	30	12.8	NS
2005–2009	94 489	43.3	10 562	47.1	<.0001	4139	47.5	<.01	20 074	45.8	<.0001	21 023	48.8	<.0001	127	54.3	NS
2010–2014	76 919	35.2	6286	28.0	NS	3156	36.3	NS	12 988	29.6	<.0001	11 915	27.7	<.0001	74	31.6	NS
2015 or later	1842	0.8	176	0.8	NS	81	0.9	NS	238	0.6	<.0001	174	0.4	<.0001	1	0.4	NS
Total	218 485	100.0	22 437	100.0	—	8706	100.0	—	43 853	100.0	—	43 034	100.0	—	234	100.0	—

Race was not available for 20 343 (9.3% of total) subjects. P value presented in boldface if <.05. AD, atopic dermatitis; AR, allergic rhinitis; EoE, eosinophilic esophagitis; IgE-FA, immunoglobulin E–mediated food allergy; NS, not significant.

^aIn the full cohort and asthma and AR subcohorts, sex was unknown for 1 subject.

^bThe race category “Unknown” represents subjects with self-identified unknown race, whereas “Other” comprises all other entries including “American Indian or Alaska Native,” “Mixed racial group,” and “Race not available.”