American Journal of Epidemiology Vol. 125, No. 1: 44-61
Copyright © 1987 by The Johns Hopkins University School of Hygiene and Public Health
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CANCER MORTALITY AND RADIOACTIVE FALLOUT IN SOUTHWESTERN UTAH
1Radiation Epidem.ology Branch, Division of Cancer Etiology, National Cancer Institute LAN-3A22, Bethesda, MD 20892.
2Clinical Epidemiology Branch, Division of Cancer Etiology, National Cancer Institute Bethesda, MD.
Cancer mortality was compared between a three-county region in southwestern Utah and the remainder of Utah in an investigation of reported excess cancer risks associated with residence in southwestern Utah during the period of above-ground nuclear tests at the Nevada Test Site. Because most of the fallout in southwestern Utah was deposited during 19531957, comparisons were limited to persons bom before 1958, and to deaths from leukemia and bone cancer during 19551980 and from other cancers during 19641980. There was no excess risk of cancer mortality in southwestern Utah, for single or grouped sites, with the single exception of leukemia which showed statistically significant odds ratios of 1.45 based on 62 deaths at all ages, and 2.84 based on nine deaths at ages 014. The finding for childhood leukemia was based on different time periods and geographic comparisons from those of two earlier studies in which no such excess was found. Mortality from all cancer sites combined was significantly lower in southwestern Utah than in the remainder of the state, even after adjustment for the higher proportion of (lower risk) Mormons in southwestern Utah. The present results, including the positive association for leukemia, are inconsistent with the high excess risks reported by Johnson (JAMA 1984;251:230-6) based on an interview survey of cancer incidence among long-term Mormon residents of southwestern Utah.
leukemia; mortality; neoplasms; radiation; ionizing; radioactive fallout
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