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Statistical inference for counting processes under shape heterogeneity
Yifei Sun, Ying Sheng
Proportional rate models are among the most popular methods for analyzing the rate function of counting processes. Although providing a straightforward rate-ratio interpretation of…
Hybrid Censored Quantile Regression Forest to Assess the Heterogeneous Effects
Huichen Zhu, Yifei Sun, Ying Wei
In many applications, heterogeneous treatment effects on a censored response variable are of primary interest, and it is natural to evaluate the effects at different quantiles (e.g…
Recurrent Events Analysis With Data Collected at Informative Clinical Visits in Electronic Health Records
Yifei Sun, Charles E. McCulloch, Kieren A. Marr +1
Although increasingly used as a data resource for assembling cohorts, electronic health records (EHRs) pose many analytic challenges. In particular, a patient's health status influ…
ROC-Guided Survival Trees and Ensembles
Yifei Sun, Sy Han Chiou, Mei-Cheng Wang
Tree-based methods are popular nonparametric tools in studying time-to-event outcomes. In this article, we introduce a novel framework for survival trees and ensembles, where the t…