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Missing Doses in the Life Span Study of Japanese Atomic Bomb Survivors.
- Source :
- American Journal of Epidemiology; Mar2013, Vol. 177 Issue 6, p562-568, 7p
- Publication Year :
- 2013
-
Abstract
- The Life Span Study of atomic bomb survivors is an important source of risk estimates used to inform radiation protection and compensation. Interviews with survivors in the 1950s and 1960s provided information needed to estimate radiation doses for survivors proximal to ground zero. Because of a lack of interview or the complexity of shielding, doses are missing for 7,058 of the 68,119 proximal survivors. Recent analyses excluded people with missing doses, and despite the protracted collection of interview information necessary to estimate some survivors' doses, defined start of follow-up as October 1, 1950, for everyone. We describe the prevalence of missing doses and its association with mortality, distance from hypocenter, city, age, and sex. Missing doses were more common among Nagasaki residents than among Hiroshima residents (prevalence ratio = 2.05; 95% confidence interval: 1.96, 2.14), among people who were closer to ground zero than among those who were far from it, among people who were younger at enrollment than among those who were older, and among males than among females (prevalence ratio = 1.22; 95% confidence interval: 1.17, 1.28). Missing dose was associated with all-cancer and leukemia mortality, particularly during the first years of follow-up (all-cancer rate ratio = 2.16, 95% confidence interval: 1.51, 3.08; and leukemia rate ratio = 4.28, 95% confidence interval: 1.72, 10.67). Accounting for missing dose and late entry should reduce bias in estimated dose-mortality associations. [ABSTRACT FROM AUTHOR]
- Subjects :
- LONGITUDINAL method
STATISTICS methodology
DATA analysis
EPIDEMIOLOGY research methodology
AGE distribution
CONFIDENCE intervals
DOSE-response relationship in biochemistry
INTERVIEWING
LEUKEMIA
NUCLEAR warfare
POISSON distribution
POPULATION geography
RADIATION doses
RESEARCH funding
SEX distribution
TIME
TUMORS
SECONDARY analysis
RELATIVE medical risk
INFORMATION needs
RESEARCH bias
DISEASE prevalence
DESCRIPTIVE statistics
Subjects
Details
- Language :
- English
- ISSN :
- 00029262
- Volume :
- 177
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- American Journal of Epidemiology
- Publication Type :
- Academic Journal
- Accession number :
- 86226594
- Full Text :
- https://doi.org/10.1093/aje/kws362