A New Multilevel Modelling Approach for Clustered Survival Data

发布时间：2021-11-01 作者：77779193永利官网浏览次数：

Speaker:	徐锦峰	DateTime:	2021年11月4日（周四）上午10：00-11：00
Brief Introduction to Speaker: 徐锦峰，香港大学。		Place:	腾讯会议，会议号请联系晏挺老师
Abstract:In multilevel modelling of clustered survival data, to account for the differences among different clusters, a commonly used approach is to introduce cluster effects, either random or fixed, into the model. Modelling with random effects may lead to difficulties in the implementation of the estimation procedure for the unknown parameters of interest because the numerical computation of multiple integrals may become unavoidable when the cluster effects are not scalars. On the other hand, if fixed effects are used, there is a danger of having estimators with large variances because there are too many nuisance parameters involved in the model. In this paper, using the idea of the homogeneity pursuit, we propose a new multilevel modelling approach for clustered survival data. The proposed modelling approach does not have the potential computational problem as modelling with random effects, and it also involves far fewer unknown parameters than modelling with fixed effects. We also establ...