| The source of error in the estimation of intertwin birth weight discordance. | |
MedLine Citation:
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PMID: 20707628 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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OBJECTIVE: to assess the accuracy of paired estimated fetal weights (EFWs) to predict three levels of twin birth weight discordance (>15%, >20% and >25%). METHOD: a cohort of twin pairs underwent ultrasound examinations within 2 weeks from birth. We calculated the frequency of under- and overestimation of the actual birth weight (< or >10%, respectively) in the entire cohort as well in the subset of mono- and dichorionic pairs. RESULTS: discordance was largely underestimated (observed 10.4 ± 0.8% compared to actual 19.2 ± 1.1%, P=0.001) because the larger twin was more frequently underestimated [30.6 vs. 17.7%, odds ratio (OR) 2.0, 95% confidence interval (CI) 1.1, 3.9 in the entire cohort, and 34.2 vs. 13.1%, OR 3.4, 95% CI 1.4, 8.4 in the dichorionic pairs]. Overall, the specificity for detecting the three levels of discordance was adequate (91.5-94.2%) but the sensitivity was poor (11.1-17.8%) and tended to decrease with increasing discordance level. CONCLUSION: the poor ability of paired EFWs to diagnose birth weight discordance results from underestimation of the larger twin. |
Authors:
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Maria Augusta Reberdao; Luisa Martins; Mariana Torgal; Rui Viana; Tatiana Seminova; Ester Casal; Manuel Hermida; Isaac Blickstein |
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Publication Detail:
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Type: Journal Article Date: 2010-08-13 |
Journal Detail:
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Title: Journal of perinatal medicine Volume: 38 ISSN: 1619-3997 ISO Abbreviation: J Perinat Med Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-11-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0361031 Medline TA: J Perinat Med Country: Germany |
Other Details:
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Languages: eng Pagination: 671-4 Citation Subset: IM |
Affiliation:
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Prenatal Diagnosis Center, Hospital Garcia de Orta, Almada, Portugal. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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