TABLE 6.

aPR for Associations Between Demographic and Clinical Factors and Delayed Diagnosis Among Subgroups of CCHD Cases

	aPR a (95% CI) for Delay b Excluding Diagnoses After 30 d, N = 848	aPR a (95% CI) for Delay b Among Primary 7 Defect c Cases, N = 470	aPR a (95% CI) for Delay b Excluding Prenatal, N = 436	aPR a (95% CI) for Diagnosis > 3 d Versus ≤ 3 d, N = 916
Maternal age, y
15–24	Reference	Reference	Reference	Reference
25–34	2.2 (0.9–5.2)	0.8 (0.3–1.9)	1.0 (0.6–1.5)	1.2 (0.9–1.8)
≥35	1.8 (0.7–4.6)	0.8 (0.3–2.3)	0.9 (0.5–1.4)	1.2 (0.8–1.9)
Maternal race/ethnicity
Non-Hispanic white	Reference	Reference	Reference	Reference
Non-Hispanic black	0.7 (0.2–2.4)	0.8 (0.2–4.0)	1.2 (0.7–2.2)	1.4 (0.8–2.3)
Hispanic	0.9 (0.4–2.0)	0.7 (0.2–2.2)	1.0 (0.6–1.7)	1.0 (0.7–1.6)
Asian	1.9 (0.9–4.0)	3.0 (1.0–8.9) d	1.0 (0.6–1.9)	1.4 (0.8–2.6)
Other	0.5 (0.1–2.5)	1.9 (0.6–6.4)	1.2 (0.6–2.4)	1.0 (0.6–1.8)
Maternal education, y
≥12	Reference	Reference	Reference	Reference
0–11	1.5 (0.6–3.6)	0.8 (0.3–2.1)	0.7 (0.4–1.3)	0.8 (0.5–1.3)
Region of residence
Boston	Reference	Reference	Reference	Reference
Outside Boston	1.5 (0.6–4.1)	0.7 (0.2–3.0)	1.6 (0.8–3.5)	2.0 (0.9–4.2)
Delivery hospital type
Level 3	Reference	Reference	Reference	Reference
Nonlevel 3	3.1 (1.8–5.2) d	4.8 (2.1–11.1) d	1.0 (0.7–1.4)	3.6 (2.7–4.9) d
Prenatal care insurance
Private	Reference	Reference	Reference	Reference
Government/other	1.3 (0.7–2.3)	1.9 (0.8–4.6)	1.1 (0.8–1.6)	1.2 (0.9–1.7)
Prenatal care initiation
First trimester	Reference	Reference	Reference	Reference
After first trimester	1.1 (0.5–2.3)	1.5 (0.6–3.4)	1.2 (0.9–1.7)	1.1 (0.8–1.6)
CCHD type
Nonisolated	Reference	Reference	Reference	Reference
Isolated e	2.0 (1.0–4.0) d	0.9 (0.4–2.2)	1.6 (1.0–2.5) d	1.6 (1.1–2.2) d
Gestational age, wk f
≥37	Reference	Reference	Reference	Reference
20–36	0.4 (0.1–1.2)	0.4 (0.1–1.8)	0.7 (0.4–1.2)	1.1 (0.8–1.7)
Plurality
Singleton	Reference	Reference	Reference	Reference
Multiple	1.0 (0.4–3.1)	3.1 (0.9–10.4)	1.2 (0.6–2.3)	1.4 (0.9–2.3)
Birth weight, g
≥1500	Reference	Reference	Reference	Reference
355–1499	1.2 (0.2–8.8)	NA	0.5 (0.1–2.0)	1.1 (0.5–2.2)

NA, not applicable.

^aAdjusted model includes all demographic and clinical factors examined. Each individual variable is presented after controlling for all other variables in the model.

^bDiagnosed after discharge home following delivery.

^cIncludes dextro-transposition of the great arteries, hypoplastic left heart syndrome, pulmonary atresia, tetralogy of Fallot, total anomalous pulmonary venous return, tricuspid atresia, and truncus arteriosus.

^d P < .05.

^eIncludes cases with single CCHDs and cases with multiple cardiac defects.

^fBased on clinical estimate.