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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국자료분석학회 Journal of The Korean Data Analysis Society Journal of The Korean Data Analysis Society 제4권 제2호
- 발행연도
- 2002.1
- 수록면
- 143 - 154 (12page)
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Epidemiological data for case-control or cohort studies are often summarized into 2x2 tables and the odds ratio is used for assessing the disease-exposure association.In this paper we define the odds ratio function(ORF) that extends odds ratio used on discrete survival-event data to continuous survival-time data, and propose estimation procedures with censored data. The first one is a nonparametric estimator based on the Nelson-Aalen estimator of cumulative hazard function, and the others are obtained using the concept of the empirical odds ratio. Asymptotic properties such as consistency and weak convergence results are also provided. The ORF provides a simple interpretation and is comparable to survival function or cumulative hazard function in comparing two groups.The mean square errors are investigated via Monte Carlo simulation. The result are finally illustrated using the Melanoma data.
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