Table 3.

Age-adjusted association of infant formula use with autistic disorder for children aged 2–4 years.

Variable	Odds Ratio	(95% Confidence Interval)	p value
Formula without DHA/ARA	4.41	(1.24 – 15.7)	0.022
Formula with DHA/ARA	1.02	(0.33 – 3.18)	0.977
Exclusive breastfeeding (no formula use)	reference
Limited to cases with reported regression in development
Formula without DHA/ARA	12.96	(1.27 – 132)	0.031
Formula with DHA/ARA	2.76	(0.28 – 27.4)	0.387
Exclusive breastfeeding (no formula use)	reference