Displaying 3 results from an estimated 3 matches for "ldbound".
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lbound
2008 Oct 28
1
group sequential analysis - stopping for futility
Hello -
I am wondering if anyone has written some R code to calculate futility
bounds for a group sequential analysis of clinical trials data. The
library ldbounds has a function 'bounds' which calculates the
effectiveness stopping bounds for various spending functions, but it does
not appear to do the same for futility (sometimes called the 'inner
wedge').
Thanks for any assistance!
-Alice
NOTICE TO RECIPIENT: If you are not the int...
2009 Dec 17
2
SPLUS Seqtrial vs. R Packages for sequential clinical trials designs
...I don’t yet have a good understanding of the various approaches to sequential clinical trials designs, I thought that the gsDesign package seemed very impressive. I also understand that there are several other R packages that relate to sequential clinical trials designs, such as AGSDest , GroupSeq, ldbounds, MChtest, PwrGSD, and Seqmon. Some of these seem fairly comprehensive while others seem to focus on a single approach.
My questions center on the adequacy of SPLUS Seqtrial and the R Packages. I was wondering if there is anyone out there who would be familiar enough with these to comment on the...
2007 Mar 26
1
Problem in loading all packages all at once
...uot;,"knncat","knnFinder","knnTree","kohonen","ks","kza","kzft","labdsv","labstatR","lars","lasso2","latentnet","lattice","latticeExtra","lazy","ldbounds","ldDesign","LDheatmap","leaps","lgtdl","limma","linprog","lme4","lmeSplines","LMGene","lmm","lmomco","Lmoments","lmtest","locfdr","locfit",&qu...