Table 3.

Multivariate logistic regression of factors associated with pediatric imaging missed care opportunities

Characteristics	Initial multivariate model			Model with feature selection
	OR	95% CI	P-value	OR	95% CI	P-value
Developmental age group
Infant (<2 years)	1.0
Toddler (3–5 years)	1.4a	1.1–1.9	0.02
Elementary school (6–12 years)	1.2	1.0–1.6	0.08
Adolescent (>12 years)	1.2	0.9–1.5	0.19
Race/ethnicity
White	1.0
Black/African American	2.0b	1.5–2.7	<0.001	1.9b	1.4–2.5	<0.001
Hispanic	1.4a	1.1–1.9	0.02
Asian	1.1	0.7–1.8	0.63
Other	1.2	0.9–1.7	0.26
Not recorded or declined	1.3	0.8–2.0	0.28
Primary language
English	1.0
Spanish	1.08	0.7–1.6	0.73
Other	0.82	0.6–1.1	0.20
Insurance type
Commercial	1.0
Medicaid	1.9b	1.5–2.3	<0.001	2.0b	1.6–2.4	<0.001
Self-pay	2.1c	1.2–3.5	0.007	2.1c	1.3–3.6	0.004
Other	2.5a	1.2–5.2	0.01	2.7c	1.3–5.4	0.007
Median household income of patient ZIP code
$50,000–74,999	1.0
$75,000–99,999	1.0	0.8–1.4	0.95	1.3b	1.2–1.4	<0.001
<$50,000	1.6b	1.3–2.0	<0.001	1.7b	1.4–2.0	<0.001
$100,000+	0.7a	0.5–1.0	0.03	0.7a	0.5–0.9	0.01
Site of imaging
Main hospital campus	1.0
Free-standing imaging center	0.8a	0.6–1.0	0.02a	0.7c	0.6–0.9	0.003
Imaging modality
CT	1.0
MRI	0.2	0.0–3.0	0.26	0.4b	0.3–0.5	<0.001
Nuclear medicine	1.4	0.9–2.2	0.19
Fluoroscopy	2.0a	1.2–3.3	0.01	1.5a	1.1–2.2	0.03
Ultrasound	0.8	0.1–10.2	0.83
Wait days
<7	1.0
7–21	2.6b	2.0–3.4	<0.001	2.7b	2.1–3.5	<0.001
>21	3.6b	2.8–4.6	<0.001	3.7b	2.9–4.8	<0.001
Radiation use during exams
Without radiation	1.0
With radiation	0.5	0.3–6.0	0.55
Sedation use during exams
Without sedation	1.0
With sedation	1.1	0.8–1.7	0.55
IV contrast use during exams
Without contrast	1.0
With contrast	1.2	0.9–1.7	0.17

CI confidence interval, OR odds ratio, ZIP Zone Improvement Plan

^aP<0.05 is significant

^bP<0.001 is significant

^cP<0.01 is significant