報告題目：Regression analysis of censored data with nonignorable missing covariates and application to Alzheimer Disease
報告人：李會瓊 教授 雲南大學
報告時間：2021年6月17日 9：00-10：00
報告地點：騰訊會議 會議 ID：132 698 185 會議密碼：0617
校内聯系人：王培潔 wangpeijie@jlu.edu.cn
報告摘要：In this paper, we discuss regression analysis of censored failure time data when there exist missing covariates and more specifically, we will consider interval-censored data, a general form of censored data, and the nonignorable missing. Although many methods have been proposed in the literature for censored data with missing covariates, they only apply to limited situations and it does not seem to exist an established procedure for the situation discussed here. For the analysis, we employ the semiparametric linear transformation model and develop a two-step estimation procedure. In addition, the asymptotic properties of the resulting estimators are established and a Poisson variablebased EM algorithm is provided for the implementation of the proposed estimation procedure. Finally the proposed approach is applied to an Alzheimer Disease study that motivated this investigation.
報告人簡介：李會瓊，雲南大學教授，博士生導師，雲南省中青年學術和技術帶頭人後備人才，雲南省萬人計劃青年拔尖人才。兼職中國現場研究會高維數據分會理事等職。主要從事醫學統計，生存分析，超高維數據分析，缺失數據分析等領域的科研與教學工作。主持國家級、省部級項目8項，在醫學統計方面的權威雜志《Statistics in Medicine》、《Statistical Methods in Medical Research》等雜志發表高水平論文30餘篇，科學出版社出版教材1部。獲全國統計科學研究優秀論文成果獎二等獎2項，雲南省自然科學二等獎2項。拟承擔統計學，大數據科學與技術等方向課程教學，博士生指導等工作。
