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Adjusted estimates for time-to-event endpoints
Journal article   Peer reviewed

Adjusted estimates for time-to-event endpoints

Barry E Storer, Ted A Gooley and Michael P Jones
Lifetime data analysis, Vol.14(4), pp.484-495
12/2008
DOI: 10.1007/s10985-008-9098-9
PMCID: PMC2660858
PMID: 18791867
url
http://doi.org/10.1007/s10985-008-9098-9View
Open Access

Abstract

In the analysis of retrospective data or when interpreting results from a single-arm phase II clinical trial relative to historical data, it is often of interest to show plots summarizing time-to-event outcomes comparing treatment groups. If the groups being compared are imbalanced with respect to factors known to influence outcome, these plots can be misleading and seemingly incompatible with results obtained from a regression model that accounts for these imbalances. We consider ways in which covariate information can be used to obtain adjusted curves for time-to-event outcomes. We first review a common model-based method and then suggest another model-based approach that is not as reliant on model assumptions. Finally, an approach that is partially model free is suggested. Each method is applied to an example from hematopoietic cell transplantation.
Recurrence Data Interpretation, Statistical Time Factors Humans Proportional Hazards Models Survival Analysis Clinical Trials, Phase II as Topic - statistics & numerical data Retrospective Studies Hematopoietic Stem Cell Transplantation - mortality Incidence

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