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Published on: October 23, 2020
Semiparametric recurrent event vs time-to-first-event analyses in randomized trials: Estimands and model
1School of Statistics and Management, Shanghai University of Finance and Economics, Shanghai, P.R. China.
Abstract:
Insights regarding the merits of recurrent event and time-to-first-event analyses are needed to provide guidance on strategies for analyzing intervention effects in randomized trials involving recurrent event responses. Using established asymptotic results we introduce a framework for studying the large sample properties of estimators arising from semiparametric proportional rate function models and Cox regression under model misspecification. The asymptotic biases and power implications are investigated for different data generating models, and we study the impact of dependent censoring on these findings. Illustrative applications are given involving data from a cystic fibrosis trial and a carcinogenicity experiment, following which we summarize findings and discuss implications for clinical trial design.
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