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Interval censored PH survival models for longitudinal data: precision of estimators
Date
2010
Abstract
We present a general likelihood for interval censored survival data arising in longitudinal studies such as longitudinal randomized controlled clinical trials (RCTs) and give some general formulae for inference in parametric, interval censored, proportional hazards, regression survival models. For the exponential regression model we compare the performance of the general likelihood with a commonly used proxy likelihood, which ignores the interval censoring by treating the interval censored times to events as if they were exact. We show analytically that use of the proxy likelihood leads to estimators (for example, of the treatment effect) which are artificially precise and we quantify the extent of the resulting biases in a simulation study.
Supervisor
Description
peer-reviewed
Publisher
IWSM
Citation
Proceedings of the 25th International Workshop on Statistical Modelling;
Files
ULRR Identifiers
Funding code
Funding Information
Science Foundation Ireland (SFI)