Table 3.

Unadjusted and adjusted odds of CRS use ^a.

Variable	CRS Use
	Yes	No	p-Value	Unadjusted OR	95% CI	Adjusted OR	95% CI
Child’s age
≥5	30	399	<0.0001	1
≤4	111	462		3.195	2.089–4.888	3.395	2.125–5.424
Child’s gender
Boy	84	437		1
Girl	56	417	0.1473	0.707	0.497–1.006	0.757	0.522–1.098
Driver’s age
≤35	114	613	0.01639	1
≥36	27	249		0.583	0.374–0.910	0.974	0.573–1.654
Driver’s gender
Male	67	392	0.6518	1
Female	74	470		0.921	0.645–1.316	1.009	0.690–1,478
Relationship with child
Not parent	9	48	0.6990	1
Parent	132	814		0.865	0.415–1.804	1.105	0.759–1.609
Education
<college	31	371	<0.0001	1
≥college	110	491		2.681	1.760–4.084	2.908	1.878–4.500
Driver’s seatbelt use
No	10	212	<0.0001	1
Yes	131	650		4.273	2.205–8.249	3.194	1.605–6.356
Provide CRS with charge
Refuse	57	390	0.2859	1
Might/would accept	84	472		1.218	0.848–1.749	1.078	0.645–1.799
Provide CRS for free
Refuse	35	265	0.1547	1
Might/would accept	106	597		1.344	0.893–2.023	1.040	0.585–1.850

^a Including the drivers whose children were under the age of 12.