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AI 根据所提供的论文材料归类:摘要聚焦生存回归与半竞争风险,未直接研究所列因果、分位数或金融风险方向。

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关注这篇论文的作者
Jin-Jian Hsieh
Weijing Wang
A. Adam Ding

半竞争风险数据的回归分析

研究问题
当死亡等终末事件对疾病进展等非终末事件产生可能相关的删失时,如何进行回归分析并检验模型适配性?
方法与思路
作者针对离散协变量组分别设定 copula 依赖模型,再对进展时间建立灵活回归,提供模型检查,并用模拟与移植数据说明。
材料陈述的贡献
摘要称提出了回归及模型检查方法,允许组间分别设定依赖结构,并通过模拟比较有限样本表现与模型误设下的稳健性。
阅读关注点
阅读时应核对组别 copula 与进展时间模型的假设、依赖删失处理方式,以及模型检查和误设模拟如何组织。
阅读边界
仅据所给 Crossref 摘要;方法针对离散协变量,未报告比较结果,不能推断其普遍优于竞争方法或适用于连续协变量。

原文摘要

Summary Semicompeting risks data are commonly seen in biomedical applications in which a terminal event censors a non-terminal event. Possible dependent censoring complicates statistical analysis. We consider regression analysis based on a non-terminal event, say disease progression, which is subject to censoring by death. The methodology proposed is developed for discrete covariates under two types of assumption. First, separate copula models are assumed for each covariate group and then a flexible regression model is imposed on the progression time which is of major interest. Model checking procedures are also proposed to help to choose a best-fitted model. Under a two-sample setting, Lin and co-workers proposed a competing method which requires an additional marginal assumption on the terminal event and implicitly assumes that the dependence structures in the two groups are the same. Using simulations, we compare the two approaches on the basis of their finite sample performances and robustness properties under model misspecification. The method proposed is applied to a bone marrow transplant data set.

笔记与分组