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Fetal Deaths with Birth Defects Among Japanese Multiples, 1974

Published online by Cambridge University Press:  01 August 2014

Y. Imaizumi ,
A. Asaka  and
E. Inouye
Y. Imaizumi*
Affiliation:
Institute of Population Problems, Ministry of Health and Welfare, Tokyo, Japan
A. Asaka
Affiliation:
Department of Health Science, Yamanashi Medical College, Yamanashi Prefecture, Tokyo, Japan
E. Inouye
Affiliation:
Science Council of Japan, Tokyo, Japan
*
Institute of Population Problems, Ministry of Health and Welfare, Kasumigaseki, Chiyoda-Ku, Tokyo, Japan

Abstract

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Source of data is “Survey on Socio-Economic Aspects of Vital Events – Plural Births in 1975”, including 12,392 twin pairs, 124 triplet sets, 7 quadruplet sets and 1 quintuplet set. Feal deaths were 3,285 for twins, 141 for triplets, 17 for quadruplets, and 5 for quintuplets, among which the numbers of birth defects were 78, 3, 0, and 0, respectively. Concordant twin pairs with the same category of birth defect were 20 among 56 pairs (0.36). As for the remaining 36 pairs, 2 pairs had different category of birth defects, 27 pairs had liveborn cotwins, and 7 pairs were both fetal deaths among which a twin had birth defect. The second-born twins had birth defects more frequently than the first-born twins among fetal deaths (28 vs 6).

Keywords

Birth defectsFetal deathsTwinsTriplets
Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 39 , Issue 3 , July 1990 , pp. 345 - 350
Copyright
Copyright © The International Society for Twin Studies 1990

References

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