Cancer increase study methodology: A review and discussion of the ``Southeastern Massachusetts Health Study 1978--1986`` Page: 9 of 43
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2.0 BACKGROUND
Pilgrim began operations in late 1972. Due to fuel rod problems,
radioactive emissions in the mid-1970's were above currently accepted EPA
guidelines. Concerns about potential health effects associated with the
Pilgrim plant arose in the early 1980s.
Initial analysis of leukemia mortality ratios and .. idence ratios by
the MDPH, using data from vital records for the years 1969-1983 and cancer
registry data from 1982-1984, suggested increased rates of leukemia.
Increases were observed for the time period 1979-1983 among costal census
tracts and in specific towns, including Plymouth. These findings led to
discussion and additional analyses of readily available data to examine the
association. Importantly, these early studies also led to a decision by the
MDPH to conduct a major epidemiological study to examine the hypothesis that
the observed elevated occurrence of leukemia in this area was related to
Pilgrim emissions. This study was conducted by the MDPH and is referred to as
the Southeastern Massachusetts Health Study.2.1
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Sever, L. E.; Baker, D. A.; Gilbert, E. S. & Mahaffey, J. A. Cancer increase study methodology: A review and discussion of the ``Southeastern Massachusetts Health Study 1978--1986``, report, September 1, 1993; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1399643/m1/9/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.