On Wed, 2007-03-28 at 10:49 -0500, Douglas Bates wrote: > On 3/28/07, Marc Schwartz <[EMAIL PROTECTED]> wrote: > > On Wed, 2007-03-28 at 02:42 -0700, francogrex wrote: > > > Does anyone know of an R package that is equivalent of S+SeqTrial for > > > analysis of clinical trials using group sequential methods? Thanks. > > > > I don't know that there are fully functional equivalents, but you might > > want to look at the following: > > > > 1. The GroupSeq package on CRAN: > > > > http://cran.r-project.org/src/contrib/Descriptions/GroupSeq.html > > > > > > 2. The ldBands() function in Frank Harrell's Hmisc package on CRAN: > > > > http://biostat.mc.vanderbilt.edu/s/Hmisc/html/ldBands.html > > > > This also requires the ld98 executable, which is available from: > > > > http://www.biostat.wisc.edu/landemets/ > > There is also the ldbounds package on CRAN for calculating Lan-DeMets > boundaries. It was prepared by students working with Dave DeMets and > does not require the ld98 executable.
Thanks Doug, I missed that one. Regards, Marc ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
