Table III.

Association between childhood autism, pervasive developmental disorder, and congenital anomalies with and without intellectual disability when adjusted for WGA

	With intellectual disability				Without intellectual disability
	n	No congenital anomaly, n (%)	Yes, congenital anomaly, n (%)	OR (95% CI), p	n	No congenital anomaly, n (%)	Yes, congenital anomaly, n (%)	OR (95% CI), p
Childhood autism	299	261 (87.3)	38 (12.7)	2.4 (1.6–3.6), <0.001	713	649 (91.0)	64 (9.0)	1.7 (1.3–2.3), 0.006
Pervasive developmental disorder	221	178 (80.5)	43 (19.5)	3.7 (2.4–5.7), <0.001	1438	1289 (89.6)	149 (10.4)	2.3 (1.9–2.8), <0.001

CI, confidence interval; OR, odds ratio; WGA, weight for gestational age.