Table 4.

Multivariate Cox Regression Models Results in Hazard Ratios

	CPS Report		Report & Removal
	HR	95% CI	HR	95% CI
IDD Diagnosis
Present	Ref.	Ref.	Ref.	Ref.
Not Present	2.71	[2.36, 3.11]	3.65	[2.76, 4.83]
Race/Ethnicity
White	Ref.	--	Ref.	--
Hispanic	0.56	[0.55, 0.56]	0.33	[0.32, 0.35]
Asian/Pacific Islander	0.48	[0.47, 0.49]	0.32	[0.30, 0.35]
Other/Unknown	0.95	[0.92, 0.99]	1.25	[1.13, 1.38]
Black	1.27	[1.25, 1.29]	1.13	[1.08, 1.18]
Native American	2.03	[1.99, 2.07]	3.10	[2.97, 3.23]
Maternal Age
20+ years	Ref.	--	Ref.	--
≤ 19 years	2.55	[2.51, 2.58]	2.47	[2.37, 2.56]
Insurance Type
Private	Ref.	--	Ref.	--
Public	3.07	[3.03, 3.10]	3.98	[3.85, 4.11]
Prenatal Care
1st/2nd Trimester	Ref.	--	Ref.	--
None/3rd Trimester	1.21	[1.19, 1.22]	1.68	[1.63, 1.73]
Parity
Non-first birth	Ref.	--	Ref.	--
First birth	0.57	[0.56, 0.57]	0.50	[0.48, 0.52]
Infant Birth Weight
Normal (2500+)	Ref.	--	Ref.	--
Low (<2500 g)	1.33	[1.31, 1.36]	1.89	[1.82, 1.97]
Birth Year	0.99	[0.98, 0.99]	1.01	[1.00, 1.01]

Notes: HR = hazard ratio; CI = confidence interval; Ref. = reference; IDD = Intellectual disability diagnoses; CPS = child protective services