Smoothed rank-based procedure for censored data
نویسندگان
چکیده
منابع مشابه
Smoothed Rank Regression With Censored Data
A weighted rank estimating function is proposed to estimate the regression parameter vector in an accelerated failure time model with right censored data. In general, rank estimating functions are discontinuous in the regression parameter, creating difficulties in determining the asymptotic distribution of the estimator. A local distribution function is used to create a rank based estimating fu...
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Rank regression is a highly-efficient and robust approach to estimate regression coefficients and to make inference in the presence of outlying survival times. Heller (2007) developed a smoothed weighted rank regression function, which is used to estimate the regression parameter vector in an accelerated failure time model with right censored data. This function can be expressed as a U -statist...
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This research gives methods for nonparametric sequential monitoring of paired censored survival data in the two-sample problem using paired weighted log-rank statistics with adjustments for dependence in survival and censoring outcomes. The joint asymptotic closed-form distribution of these sequentially monitored statistics has a dependent increments structure. Simulations validating operating ...
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Small-sample properties of censored-data.rank tests, such as Mantel's logrank test, the Breslow test or the general dass of tests proposed by Peto and Peto (1972, Journal oj the Royal Statistical Society, Series A 135, 185-206), are examined. It is found that the latter dass of tests, in particular, can be substantially nonconservative when applied to small sam pies. The most serious inaccuraci...
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ژورنال
عنوان ژورنال: Electronic Journal of Statistics
سال: 2014
ISSN: 1935-7524
DOI: 10.1214/14-ejs975