| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
|---|
| Research Abstract |
As common practice, if the exact time of occurrence is not known due to interval-censoring, a single point imputation (e.g. right-point imputation) for the censoring interval is most often done as though it was the exact time of event and the standard survival analysis are performed. On the other hand, there are several corresponding methods to interval-censored data. Zao's method is one of them. It was found that Zao's method does not maintain type I error probability in our preliminary research. We explored characteristics of single point imputations and Zao's method deeply, and reported the results at an international conference. We tried to improve Zao's method. While using R to evaluate an improved statistics, we found unstable performance of a package (IntCox). We consider some remedies for 'IntCox' and will report the results at an international conference.
|
