Han-Qiao Shao

Limited Assessment of Proportional Hazards Despite More Frequent Violations Identified in Updated Oncology Trial Analyses: Frequency, Patterns, and Statistical Implications.

Prior studies suggest that proportional-hazards violations (PHVs) occur in oncology randomized controlled trials (RCTs) and may affect conclusions, but evidence has largely focused on initial reports rather than updated analyses. We examined PH testing practices, frequency, patterns, and statistical implications of PHV...