Göran, thanks for the update, I'm just about to install it!
Just wanted to drop you a short line about performance (as you once requested): aftreg takes ages on my windows machine to calculate a small set of 7 observations which are not even grouped together by "id". To be a bit more precise, it takes 2:40 mins on my Intel T9300 Core2 Duo @ 2.5 GHz. Bigger samples with about 700 observations and 6 dependent variables are in the 10 minutes range. I just fired up my linux console (ubuntu) and calculation takes not even 2 seconds here. I've attached a screenshot of my system performance during calculation, maybe that could already be a first hint (interestingly I'm seeing some kind of sawtooth profile on physical memory history). Generally it's not a problem for me as I can use the linux version, but maybe you have an idea what makes it so slow. If I can provide you with more details or help on fixing it, let me know. Here's the dump for reconstruction:
library(eha)
testdata
start stop censor groupvar var1 var2 1 0 1 0 1 0.91663902 0.0847912 2 1 2 0 1 0.60470753 0.6487798 3 2 3 0 1 0.09599891 0.2195178 4 3 4 1 1 0.86384189 0.6667897 5 0 1 0 2 0.07747445 0.8782836 6 1 2 0 2 0.44608030 0.2218685 7 2 3 1 2 0.77317152 0.3813840
fit1 <- aftreg(Surv(start, stop, censor)~var1, data=testdata)
sessionInfo()
R version 2.9.2 (2009-08-24) i386-pc-mingw32 locale: LC_COLLATE=German_Germany.1252;LC_CTYPE=German_Germany.1252;LC_MONETARY=German_Germany.1252;LC_NUMERIC=C;LC_TIME=German_Germany.1252 attached base packages: [1] splines stats graphics grDevices datasets utils methods base other attached packages: [1] eha_1.2-13 survival_2.35-8 rcom_2.2-1 rscproxy_1.3-1 loaded via a namespace (and not attached): [1] tools_2.9.2 All the best Philipp
<<inline: aftregperf.PNG>>
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