TABLE 2.
Birth defects among infants with and without NAS in Delaware, 2010–2017
| Exposure/outcome | Birth defect | No birth defect | Total | cORb (95% CI) | aORc (95% CI) |
|---|---|---|---|---|---|
| NASa | 56 (3.4%) | 1,595 (96.6%) | 1,651 | 1.0 (0.8–1.3) | 0.9 (0.6–1.1) |
| Non-NAS | 2,728 (3.4%) | 76,908 (96.6%) | 79,636 | ||
| Total | 2,784 (3.4%) | 78,503 (96.6%) | 81,287 |
Abbreviations: aOR, adjusted odds ratio; BMI, body mass index; CI, confidence interval; cOR, crude odds ratio; NAS, neonatal abstinence syndrome.
a
NAS measured using ICD-9-CM/ICD-10-CM codes 779.5 and P96.1.
b
cOR with 95% CI.
c
aOR with 95% CI. Adjusted a priori for plurality, maternal age, maternal education, maternal race/ethnicity, insurance status at delivery, county of residence, trimester of prenatal care initiation, cigarette use during pregnancy, and pre-pregnancy BMI.