| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
For the purpose of examining a causal association between body mass index and death appropriately, I developed and examined statistical methodologies when there exists time-dependent confounding. I developed model selection criterion for two kinds of causal models, Marginal Structural Models and Structural Mean Models. I showed by simulation experiments that the proposed criterion can choose the right causal model with the probability that is higher than existing methods. I further developed estimation and sensitivity analysis methods for evaluating the direct and indirect effects of an exposure variable, in the presence of time-dependent confounding. By an analysis of a cohort data, I found that there is not large time-dependent confounding.
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