Table 2.

Prevalence of Medical Conditions in Families

		AGRE cohort						SSC cohort
		Children with ASD		Parents		Non‐ASD Siblings		Children with ASD		Parents		Non‐ASD Siblings
	N	728		694		184		2623		5246		2623
Allergies		291	40.0%	270	39.9%	56	30.4%	918	37.7%	—	—	—	—
Asthma		113	16.3%	104	15.2%	33	18.2%	259	10.6%	426	8.7%	267	11.3%
GID		309	42.4%	184	26.5%	23	12.2%	1121	43.1%	—	—	—	—
Seizures		89	12.2%	28	4.1%	5	2.7%	129	5.30%	45	0.9%	24	1.1%

Note. Percentages reported exclude unknown diagnoses.