TABLE 2—

Predictors of Immunization Initiation by 3 Months of Age: Results of Logistic Regression

	Odds Ratio	95% Confidence Interval	P
Age of infant when Oregon Health Plan coverage began	2.1	1.7, 2.5	.000
Mother covered by Oregon Health Plan	1.5	1.4, 1.6	.000
Oregon Health Plan eligibility category (Children’s Health Insurance Program; Poverty Level Medical, pregnant women and their newborns; Temporary Assistance for Needy Families; foster care; blind or disabled)	1.2	1.1, 1.3	.000
Race/ethnicity of infant	0.94	0.92, 0.96	.000
Mother’s number of Oregon Health Plan births in 2000–2001	0.83	0.74, 0.95	.006