1 citations · 1 across the 2 of their papers we have counts for
2 papers
stat.AP2024
Strategy to control biases in prior event rate ratio method, with application to palliative care in patients with advanced cancer
Xiangmei Ma, Grace Meijuan Yang, Qingyuan Zhuang +1
Objectives: Prior event rate ratio (PERR) is a method shown to perform well in mitigating confounding in real-world evidence research but it depends on several model assumptions. W…
stat.AP2024★ 1 cited
Robust evaluation of vaccine effects based on estimation of vaccine efficacy curve
Ziwei Zhao, Xiangmei Ma, Paul Milligan +1
Background: The Cox model and its extensions assuming proportional hazards is widely used to estimate vaccine efficacy (VE). In the typical situation that VE wanes over time, the V…