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The Stata Journal
Volume 14 Number 1: pp. 176-190



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strel2: A command for estimating excess hazard and relative survival in large population-based studies

Michael Hills
London School of Hygiene and Tropical Medicine, Retired
London, UK
mhills@blueyonder.co.uk
Bernard Rachet
London School of Hygiene and Tropical Medicine
London, UK
bernard.rachet@lshtm.ac.uk
Milena Falcaro
London School of Hygiene and Tropical Medicine
London, UK
milena.falcaro@lshtm.ac.uk
Abstract.  In this article, we describe strel2, a Stata command for the estimation of excess hazard and relative survival in large population-based datasets. strel2 implements the maximum-likelihood estimation approach developed by Estève et al. (1990, Statistics in Medicine 9: 529–538) and assumes that the excess hazard is a piecewise constant function. Categorical covariates can be incorporated into the model, allowing the user to obtain interval- and covariate-specific estimates of the quantities of interest. Although alternative and more powerful commands for relative survival exist, strel2 is a simple tool that is particularly convenient for users who may not have strong statistical skills and want to analyze very large datasets.
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View all articles with these keywords: strel2, background mortality, excess hazard, relative survival, net survival

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