Table 4.

Adjusted risks of cerebral palsy associated with maternal infection and with other known sociodemographic risk factors in a multivariable logistic regression model.^*

	Odds Ratio	95% CI	P value
Any study infection	2.17	2.04 – 2.32	<0.001
Maternal race
White	Reference	Reference	Reference
Black	1.02	0.94 – 1.11	0.64
Hispanic	0.96	0.09 – 1.01	0.13
Asian	0.78	0.71 – 0.85	<0.001
Other	0.92	0.75 – 1.13	0.42
Maternal age in years
18 – 34	Reference	Reference	Reference
< 18	1.04	0.93 – 1.15	0.51
>= 35	1.29	1.22 – 1.37	<0.001
Maternal education, years
College graduate (> 16 y)	Reference	Reference	Reference
Some college (13-15 y)	1.10	1.02 – 1.19	0.01
High school graduate (12 y)	1.15	1.06 – 1.23	<0.001
Secondary school (6-11 y)	1.15	1.06 – 1.25	0.001
Primary school or none (0-5 y)	1.22	1.07 – 1.38	0.002
Low insurance status#	0.99	0.94 – 1.04	0.73
Preterm delivery	4.78	4.57 – 5.01	<0.001
Maternal obesity	1.23	1.02 – 1.49	0.03
Male infant	1.28	1.23 – 1.34	<0.001

^*Logistic regression model includes all the variables listed in the table.

^#Medicare/Medicaid/Self-Insured