Journal
JOURNAL OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS
Volume 24, Issue 1, Pages 39-50Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/00004703-200302000-00009
Keywords
prenatal cocaine exposure; language development
Funding
- NCRR NIH HHS [M01-RR 05280, M01 RR005280-08] Funding Source: Medline
- NIDA NIH HHS [R01 DA 06556, R01 DA006556-15, R01 DA006556] Funding Source: Medline
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The influence of prenatal cocaine exposure on children's language functioning was evaluated longitudinally at six time points from 4 months to 3 years of age. The Miami Prenatal Cocaine Study prospectively enrolled 476 full-term African-American infants at birth, categorized as cocaine-exposed (n = 253) or non-cocaine-exposed (n = 223) by maternal self-report and bioassays (maternal/infant urine, meconium). The Bayley Scales of Infant Development, scored using the Kent Scoring Adaptation for language, was administered at 4, 8, 12, 18, and 24 months. The Clinical Evaluation of Language Fundamentals-Preschool was administered at 3 years. In longitudinal analyses using Generalized Estimating Equations, cocaine-exposed children had lower overall language skills than non-cocaine-exposed children (D = -0.151; 95% CI = -0.269, -0.033; p = .012). Longitudinal findings remained stable after evaluation of potential confounding influences including other prenatal substance exposures and sociodemographic factors. Preliminary evidence also indicated possible mediation through an intermediary effect involving cocaine-associated deficits in fetal growth.
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