Discussion of Double Sampling for Survival Analysis
(written by Stuart G. Baker)
These programs are related to the discussion article "Discussion of Double Sampling for Survival Analysis" to appear in Biometrics following the manuscript by Frangakis and Rubin (FR). Most of the software is based on the model in Baker, Wax, and Patterson (1993) (BWP)
The program requires Mathematica.
The first step is to load composite linear model software into a directory called clm.
Then download the following files.
To reproduce calculations in the manuscript, type
For a hypothetical example with time-varying administrative censoring type
Download All (zip 20kb)
|double.m (m, 8kb)
|| main program for discussion (loads all others)
|doublev.m (m, 6kb)
||main program for extension to time-varying administrative censoring
|exbwpg.m (m, 7kb)
||generate hypothetical data
|exbwp.m (m, 8kb)
||BWP for full data
|exbwpr.m (m, 9kb)
||BWP for reduced data
|exbwpf.m (m, 8kb)
||BWP for full follow-up only
|exbwpfr.m (m, 6kb)
||FR method for simple example
|exbwpv.m (m, 10kb)
||BWP for administrative censoring at time 3 for full data
|exbwpvr.m (m, 10kb)
||BWP for administrative censoring at time 3 for reduced data
Baker SB, Wax Y, Patterson B. Regression analysis of grouped survival data:informative censoring and double sampling. Biometrics, 1993;49:379-389.
Frangakis CE, Rubin DB.A note on addressing an idiosyncrasy in estimating survivalcurves using double sampling in the presence ofself-selected right censoring. Biometrics, 2001, In press.
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