2. Analyses
The analyses herein are based on the most recent data set from
the UAB study of SBR workers including the most recent exposurevalues. The epidemiological data set was first available in 1995
(findings published in Delzell et al. [8]). These 1995 data were
updated in 2000 [5,6] to include substantially revised estimates
of exposure. The most recent update of the data was in 2004, when
the UAB added seven more years of follow-up (through 1998) and
included the most recent estimates of exposures developed in 2000
[14,18]. Exposure estimates are available for 6 of the 8 plants in the
UAB study, and our exposure–response modeling is based on these
6 plants. In these six plants, the 2004 epidemiological data includes
81 decedents with leukemia as opposed to 58 decedents with leukemia
in the 1995 and 2000 data sets. In the 2004 data set there
are a total of 16,585 workers and 5593 decedents with exposure
estimates for BD, STY, and DMDTC.