2014 Fiscal Year Final Research Report
Development of C-index-based survival tree and its application to biomedical research
| Project/Area Number |
24700276
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Statistical science
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| Research Institution | Osaka University |
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Principal Investigator |
HAYASHI Kenichi 大阪大学, 医学(系)研究科(研究院), 助教 (70617274)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 医学統計学 |
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| Outline of Final Research Achievements |
This project investigated a concordance probability for time-to-event data called the C-index and its applicability to Survival Tree. The C-index can be seen as an extension of the area under the ROC curve for binary data. However, the existence of censored individuals causes a bias in estimating the C-index. We proposed some estimators for the C-index which reduce the bias, and demonstrated their superiority to the existing estimators via numerical experiments.
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| Free Research Field |
統計科学
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