本學期的第一次演講，有兩場喔!!
雖然有點晚了，但還是請大家告訴大家踴躍來聽吧!!
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題 目：Correction Methods for Dosimetry Error Using Chromosome
Aberration Data in Survival Analysis
主講人：王清雲教授 (Division of Public Health Sciences,
Fred Hutchinson Cancer Research Center)
時 間：101年2月24日(星期五)上午10:00-10:50
地 點：交大綜合一館427室
Abstract
We develop methods using chromosome aberration data to adjust for the effects
of radiation dose measurement error on the estimation of radiation dose
responses for health effects in survivors of the atomic bombings of Hiroshima
and Nagasaki. Although some measurement error methods have been applied to
adjust for radiation measurement error in Radiation Effects Research
Foundation (RERF) data, to our knowledge, the measurement error standard
error of the radiation dose was assumed in the existing work as a sensitivity
analysis. The estimated radiation dose calculated from physical models and
data regarding the exposure scenario of an individual survivor may be
considered as a surrogate variable for the unobserved underlying true
radiation dose. Biomarkers such as percentage of stable chromosome
aberrations can be treated as instrumental variables for the unobserved
radiation dose. In the paper, we investigate exposure measurement error in
excess relative risk regression. We develop regression calibration and
nonparametric correction estimation. We apply our methods to a subcohort of
more than 3,000 surviviors who have DS02 radiation dose estimates, stable
chromosome aberration data, and the outcome variable is time to solid tumor
mortality. We can estimate radiation dose responses with an appropriate
adjustment for the uncertainty in DS02 dose estimates.
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※ 編輯: locust0923 來自: 140.113.114.147 (02/23 19:19)