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American Journal of Epidemiology Advance Access published online on July 3, 2007
American Journal of Epidemiology, doi:10.1093/aje/kwm146
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American Journal of Epidemiology © The Author 2007. Published by the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.

Original Contribution

Maternal Periconceptional Alcohol Consumption and Risk of Orofacial Clefts

Paul A. Romitti1, Lixian Sun1, Margaret A. Honein2, Jennita Reefhuis2, Adolfo Correa2, Sonja A. Rasmussen2 and the National Birth Defects Prevention Study

1 Department of Epidemiology, The University of Iowa, Iowa City, IA
2 National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA

Correspondence to Dr. Paul A. Romitti, Department of Epidemiology, C21-E GH, 200 Hawkins Drive, The University of Iowa, Iowa City, IA 52242 (e-mail: paul-romitti{at}uiowa.edu).

Received for publication August 25, 2006. Accepted for publication April 4, 2007.

Using data from the National Birth Defects Prevention Study, the authors investigated the association between maternal reports of periconceptional alcohol consumption and clefting. Cases with a cleft lip, cleft palate, or both and unaffected controls delivered from 1997 through 2002 were ascertained. Interview reports of alcohol consumption were obtained from 1,749 (75.1%) case and 4,094 (68.2%) control mothers. Adjusted odds ratios and 95% confidence intervals were calculated to assess associations. Compared with odds ratios for mothers with no reported consumption, those for mothers who consumed alcohol tended to be near to (cleft lip, cleft lip with cleft palate) or to exceed (cleft palate) unity. The odds ratios associated with binge drinking were elevated but did not demonstrate significantly increased risk for any phenotype; however, the odds ratios differed by the type of alcohol consumed, particularly for cleft palate (distilled spirits > wine > beer). These odds ratios were further increased among mothers with no reported folic acid intake. Although these findings suggest that the association between alcohol consumption and clefting might be most influenced by the type of beverage consumed and folic acid intake, they are preliminary and might reflect chance associations. Such findings need exploration in additional, large studies.

alcohol drinking; case-control studies; cleft lip; cleft palate; folic acid; pregnancy

Abbreviations: CDC, Centers for Disease Control and Prevention


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