Table 4. Multiple regression model of the number of newborn complications associated with autism spectrum disorder: adjusted Odds Ratio with respective 95% confidence intervals. Montes Claros, MG, Brasil.

Number of complications	Case (n=253)	Control (n=886)	ORcrude (95%CI)	p-value	ORadjusted (IC95%)	p-value
	n (%)	n (%)
1	86 (34.0)	272 (30.7)	1.82 (1.33-2.50)	<0.001	1.71 (1.22-2.38)	0.002
≥2	62 (24.5)	54 (6.1)	8.16 (5.12-12.92)	<0.001	6.39 (4.10-10.00)	<0.001
None	105 (41.5)	560 (63.2)	Reference