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首页>数理医药学杂志
- 杂志名称：数理医药学杂志
- 主管单位：湖北省教育厅
- 主办单位：武汉大学,中国工业与应用数学学会,医药数学专业委员会
- 国际刊号：1004-4337
- 国内刊号：42-1303/R
- 出版周期：月刊
期刊荣誉：中国医药数学会颁发的《中国优秀特色期刊奖》、《现代计量医学最佳论坛奖》期刊收录：知网收录(中), 国家图书馆馆藏, 维普收录(中), 上海图书馆馆藏, 万方收录(中)
关键词：Censorship Effective sample size Rate test Sample size
摘要：Objective This paper proposes a nonparametric procedure of the sample size determination for survival rate test. Methods Using the classical asymptotic normal procedure yields the required homogenetic effective sample size and using the inverse operation with the prespecified value of the survival function of censoring times yields the required sample size. Results It is matched with the rate test for censored data, does not involve survival distributions, and reduces to its classical counterpart when there is no censoring. The observed power of the test coincides with the prescribed power under usual clinical conditions. Conclusion It can be used for planning survival studies of chronic diseases.
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