Table 1.
Maternal and infant characteristics (N = 344).
| Maternal characteristics | |
|---|---|
| Maternal age at delivery (years)a | 30 (5.8) |
| Race | |
| White, non-Hispanic | 218 (63%) |
| Black, non-Hispanic | 104 (30%) |
| Other | 22 (7%) |
| Marital status | |
| Married | 229 (67%) |
| Not married, living with someone | 46 (13%) |
| Not married, living alone | 69 (20%) |
| Household income ($)b | 55K (27K–85K) |
| Employed | 284 (82%) |
| Education | |
| <= High School or GED | 74 (22%) |
| Some college or college graduate | 195 (56%) |
| Graduate or professional school | 75 (22%) |
| Moderate to severe depression (BDI > 13) | 89 (26%) |
| Alcohol use during pregnancy | |
| Never drank alcohol during pregnancy | 192 (56%) |
| Drank < 1 alcoholic drink per month | 103 (30%) |
| Drank > =1 alcoholic drink per month | 49 (14%) |
| Marijuana use during pregnancy | 24 (7%) |
| Blood lead (μg/dL)c | 0.827 (0.791–0.865) |
| Serum cotinine (ng/mL)c | 0.099 (0.075–0.132) |
| Reported active smoking during pregnancy | 39 (11%) |
| Serum total PCB (ng/g lipid)c | 61.6 (57.8–65.5) |
| Infant characteristics | |
| Male | 162 (47%) |
| Gestational age (weeks)a | 39 (1.7) |
| Birth weight (g)a | 3389 (614) |
| Age at 5-week NNNS exam (days) | 34 (5) |
| At risk for neurodevelopmental deficitsd | 41 (12%) |
| Being breastfed at least 1 week | 269 (78%) |
Data reported as frequency (percent).
a
Mean (SD).
b
Median (25th, 75th percentile).
c
Geometric mean (95% confidence interval).
d
Infant defined as at risk for neurodevelopmental deficits if infant was preterm, low birth weight or had a NICU stay.