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Population attributable fractions for three perinatal risk factors for autism spectrum disorders, 2002 and 2008 autism and developmental disabilities monitoring network.
- Source :
-
Annals of epidemiology [Ann Epidemiol] 2014 Apr; Vol. 24 (4), pp. 260-6. Date of Electronic Publication: 2014 Jan 15. - Publication Year :
- 2014
-
Abstract
- Purpose: Numerous studies establish associations between adverse perinatal outcomes/complications and autism spectrum disorder (ASD). There has been little assessment of population attributable fractions (PAFs).<br />Methods: We estimated average ASD PAFs for preterm birth (PTB), small for gestational age (SGA), and Cesarean delivery (CD) in a U.S. population. Average PAF methodology accounts for risk factor co-occurrence. ASD cases were singleton non-Hispanic white, non-Hispanic black, and Hispanic children born in 1994 (n = 703) or 2000 (n = 1339) who resided in 48 U.S. counties included within eight Autism and Developmental Disabilities Monitoring Network sites. Cases were matched on birth year, sex, and maternal county of residence, race-ethnicity, age, and education to 20 controls from U.S. natality files.<br />Results: For the 1994 cohort, average PAFs were 4.2%, 0.9%, and 7.9% for PTB, SGA, and CD, respectively. The summary PAF was 13.0% (1.7%-19.5%). For the 2000 cohort, average PAFs were 2.0%, 3.1%, and 6.7% for PTB, SGA, and CD, respectively, with a summary PAF of 11.8% (7.5%-15.9%).<br />Conclusions: Three perinatal risk factors notably contribute to ASD risk in a U.S. population. Because each factor represents multiple etiologic pathways, PAF estimates are best interpreted as the proportion of ASD attributable to having a suboptimal perinatal environment resulting in PTB, SGA, and/or CD.<br /> (Published by Elsevier Inc.)
Details
- Language :
- English
- ISSN :
- 1873-2585
- Volume :
- 24
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Annals of epidemiology
- Publication Type :
- Academic Journal
- Accession number :
- 24529515
- Full Text :
- https://doi.org/10.1016/j.annepidem.2013.12.014