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Mathematical Modelling
Comparison of nonparametric estimates of the survival functions
A. A. Abdushukurova, S. B. Bozorovb a Lomonosov Moscow State University, Tashkent branch, Tashkent, Uzbekistan
b Gulistan State University, Gulistan, Uzbekistan
(published under the terms of the Creative Commons Attribution 4.0 International License)
Abstract:
The article compares three types of estimates: exponential, multiplying and power structures for the survival function of three random censoring observations on the right. It was previously established that all these three estimates are equivalent with a growing sample size, i.e. three with the same centering and normalization converge to the same Gaussian process. For specific samples, it is shown that power estimates are defined on the entire line, in contrast to exponential and multiply estimates. Therefore, power estimates are better than the other two. Censored data is used in survival analyses, biomedical trials, and industrial experiments. There are several censoring schemes (right, left, both sides, combined with competing risks, and others). However, right-sided random censoring is common in the statistical literature because it is easy to describe from a methodological point of view. Here we also consider this type of censoring, to compare our results with others.
Keywords:
estimators, random censorship from the right, survival function, confidence bands.
Received: 24.07.2023 Revised: 31.08.2023 Accepted: 30.10.2023
Citation:
A. A. Abdushukurov, S. B. Bozorov, “Comparison of nonparametric estimates of the survival functions”, Vestnik SamU. Estestvenno-Nauchnaya Ser., 29:3 (2023), 72–78
Linking options:
https://www.mathnet.ru/eng/vsgu713 https://www.mathnet.ru/eng/vsgu/v29/i3/p72
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Statistics & downloads: |
Abstract page: | 30 | Full-text PDF : | 10 | References: | 13 |
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