Congenital Malformations and Perinatal Deaths Among the Children of Atomic Bomb Survivors: A Reappraisal
- Radiation Effects Research Foundation (RERF), Hiroshima (Japan)
- HiroSoft International Corporation, Eureka, CA (United States)
- Radiation and Nuclear Safety Authority, Helsinki (Finland)
From 1948 to 1954, the Atomic Bomb Casualty Commission conducted a study of pregnancy outcomes among births to atomic bomb survivors (Hiroshima and Nagasaki, Japan) who had received radiation doses ranging from 0 Gy to near-lethal levels. Past reports (1956, 1981, and 1990) on the cohort did not identify significant associations of radiation exposure with untoward pregnancy outcomes, such as major congenital malformations, stillbirths, or neonatal deaths, individually or in aggregate. We reexamined the risk of major congenital malformations and perinatal deaths in the children of atomic bomb survivors (n = 71,603) using fully reconstructed data to minimize the potential for bias, using refined estimates of the gonadal dose from Dosimetry System 2002 and refined analytical methods for characterizing dose-response relationships. The analyses showed that parental exposure to radiation was associated with increased risk of major congenital malformations and perinatal death, but the estimates were imprecise for direct radiation effects, and most were not statistically significant. Nonetheless, the uniformly positive estimates for untoward pregnancy outcomes among children of both maternal and paternal survivors are useful for risk assessment purposes, although extending them to populations other than the atomic bomb survivors comes with uncertainty as to generalizability.
- Research Organization:
- Radiation Effects Research Foundation (RERF), Hiroshima (Japan); HiroSoft International Corporation, Eureka, CA (United States)
- Sponsoring Organization:
- USDOE; Japanese Ministry of Health, Labour and Welfare
- OSTI ID:
- 1903951
- Journal Information:
- American Journal of Epidemiology, Vol. 190, Issue 11; ISSN 0002-9262
- Publisher:
- Oxford University PressCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Genetic effects of the atomic bombs: a reappraisal
Genetic effects of the atomic bombs: a reappraisal