3 papers
stat.ME2025
Bias reduction method for prior event rate ratio, with application to emergency department visit rates in patients with advanced cancer
Xiangmei Ma, Chetna Malhotra, Eric Andrew Finkelstein +1
Objectives: Prior event rate ratio (PERR) is a promising approach to control confounding in observational and real-world evidence research. One of its assumptions is that occurrenc…
stat.AP2025
Performance of prior event rate ratio method in the presence of differential mortality or dropout
Yin Bun Cheung, Xiangmei Ma
Purpose: Prior event rate ratio (PERR) method was proposed to control for measured or unmeasured confounders in real-world evaluation of effectiveness and safety of medical treatme…
stat.ME2024
Reverse time-to-death as time-scale in time-to-event analysis for studies of advanced illness and palliative care
Yin Bun Cheung, Xiangmei Ma, Isha Chaudhry +5
Background: Incidence of adverse outcome events rises as patients with advanced illness approach end-of-life. Exposures that tend to occur near end-of-life, e.g., use of wheelchair…