建院40周年系列讲座第48期

发布者:余璐尧发布时间:2020-11-25浏览次数:558

88858cc永利官网建院40周年系列活动之学术讲座第48期

88858cc永利官网统计系列 Seminar 第76期



主题: Inference with Combined Data from Subgroup Selection and Validation Phases in Clinical Trials

主讲人: 周建军 副教授

主持人:王国长

地点:88858cc永利官网(中惠楼)102室

会议时间:2020年11月21日下午16:00-17:00

  

摘要

When a promising subgroup is identified from an unsuccessful trial with a broad target population, we often need to evaluate and possibly confirm the selected subgroup with a follow-up study, typically a validation trial, on the subgroup. To avoid the risk of data snooping, the classical evaluation focuses solely on the validation trial. We ask the question of how to utilize data from both trials to improve the efficiency of subgroup evaluation without selection bias. In this paper, we propose a new resampling-based approach to quantify and remove selection bias and then to perform data combination from both trials for valid and efficient inference on the subgroup effect. The proposed method is model-free and asymptotically sharp. We demonstrate the merit of the proposed method by revisiting the panitumumab trial and show how much data combination could help improve efficiency of clinical trials when a promising subgroup is identified from part of the data.

  

主讲人简介

周建军,男,云南大学副教授,2012年毕业于云南大学统计系(与中科院数学与系统科学研究院联合培养),获理学博士学位。2012年7月至今,在云南大学统计系工作,2018年10月-2019年10月,在美国密歇根大学统计系担任访问学者。2017年入选云南大学“中青年骨干教师培养计划”,2018年入选云南省“万人计划青年拔尖人才项目”。研究方向为:函数型数据分析、金融时间序列分析、空间统计分析、子群分析。承担国家自然科学基金3项,云南省基金1项,发表论文10多篇。