{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T18:12:06Z","timestamp":1761675126525,"version":"3.40.5"},"reference-count":45,"publisher":"American Academy of Pediatrics (AAP)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2002,5,1]]},"abstract":"<jats:p>Objective. We evaluated the association between mothers\u2019 use of multivitamin supplements and their infants\u2019 risk for omphalocele, a congenital anomaly of the abdominal wall. Omphalocele can occur in certain multiple congenital anomaly patterns with neural tube defects, for which a protective effect of multivitamins with folic acid has been demonstrated.<\/jats:p><jats:p>Methods. We used data from a population-based case-control study of infants born from 1968\u20131980 to mothers residing in metropolitan Atlanta. Case-infants with nonsyndromic omphalocele (n = 72) were actively ascertained from multiple sources. Control-infants (n = 3029), without birth defects, were selected from birth certificates by stratified random sampling.<\/jats:p><jats:p>Results. Compared with no use in the periconceptional period, periconceptional use of multivitamin supplements (regular use from 3 months before pregnancy through the first trimester of pregnancy) was associated with an odds ratio for nonsyndromic omphalocele of 0.4 (95% confidence interval [CI]: 0.2\u20131.0). For the subset comprising omphalocele alone or with selected midline defects (neural tube defects, hypospadias, and bladder\/cloacal exstrophy), the odds ratio was 0.3 (95% CI: 0.1\u20130.9). These estimates were similar when the reference group also included women who began using multivitamins late in pregnancy (during the second or third month of pregnancy). The small number of participants limited the precision of subgroup analyses and translated into wide confidence intervals that included unity.<\/jats:p><jats:p>Conclusions. Periconceptional multivitamin use was associated with a 60% reduction in the risk for nonsyndromic omphalocele. These findings await replication from additional studies to confirm the findings, generate more precise estimates, and detail possible mechanisms of actions.<\/jats:p>","DOI":"10.1542\/peds.109.5.904","type":"journal-article","created":{"date-parts":[[2004,8,14]],"date-time":"2004-08-14T00:17:55Z","timestamp":1092442675000},"page":"904-908","source":"Crossref","is-referenced-by-count":57,"title":["Occurrence of Omphalocele in Relation to Maternal Multivitamin Use: A Population-Based Study"],"prefix":"10.1542","volume":"109","author":[{"given":"Lorenzo D.","family":"Botto","sequence":"first","affiliation":[{"name":"From the National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joseph","family":"Mulinare","sequence":"additional","affiliation":[{"name":"From the National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. David","family":"Erickson","sequence":"additional","affiliation":[{"name":"From the National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"417","published-online":{"date-parts":[[2002,5,1]]},"reference":[{"key":"2021121006275182700_R1","doi-asserted-by":"crossref","unstructured":"Smithells RW, Nevin NC, Seller MJ, et al. Further experience of vitamin supplementation for prevention of neural tube defect recurrences. Lancet.1983;1:1027\u20131031","DOI":"10.1016\/S0140-6736(83)92654-5"},{"key":"2021121006275182700_R2","doi-asserted-by":"crossref","unstructured":"Berry RJ, Li Z, Erickson JD, et al. Prevention of neural-tube defects with folic acid in China. China\u2013US Collaborative Project for Neural Tube Defect Prevention. 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