DSTPLAN Version 4.2 -- September, 2000
Calculations for Sample Sizes and Related Problems
Barry W. Brown Christopher Brauner Albert Chan
David Gutierrez Jay Herson James Lovato
James Polsley Kathy Russell John Venier
This work was supported by grant CA-16672 from the National
Cancer Institute.
OVERVIEW OF THE PACKAGE
DSTPLAN performs sample size and related calculations needed to plan
studies. Parameters of a test include those necessary to describe the
distributions under the null and alternative hypotheses, sample sizes,
significance levels, and power. Given values for all but one
parameter, DSTPLAN will calculate the value of that one parameter.
DSTPLAN calculates values for 26 types of studies.
WHAT'S NEW IN VERSION 4.2
DSTPLAN version 4.2 is the latest version of STPLAN and supersedes all
STPLAN versions. The name change from STPLAN to DSTPLAN indicates the
fact that in this version all calculations are performed in double
precision.
IN VERSION 4.2 MANY BUGS HAVE BEEN FIXED AND THE SOURCE CODE HAS BEEN
CLEANED UP EXTENSIVELY. Since all calculations are now performed in
double precision, the allowed ranges of parameter values have been
expanded. Parameter range checking in the routines has also been
improved to produce more meaningful error messages.
The documentation has been revised and some errors have been
corrected. The examples in the documentation have been recalculated
using the new code and in some cases they have been changed the more
closely to follow the examples proposed in the text.
WHERE TO GET IT
Software written by members of the section is freely available to
anyone. Reposting on other archives is encouraged. The code is
furnished in source form and as Win32 and Power PC Macintosh
executables. Readers with Internet access and a browser might note
the following web site addresses:
University of Texas M. D. Anderson Cancer Center Home Page:
http://mdanderson.org/
Department of Biomathematics Home Page:
http://odin.mdacc.tmc.edu/
Available Software:
http://odin.mdacc.tmc.edu/anonftp/
DSTPLAN
http://odin.mdacc.tmc.edu/anonftp/page_2.html#DSTPLAN
Our code can also be obtained by anonymous ftp to odin.mdacc.tmc.edu.
The index is on file ./pub/index.
Our statistical code is also posted to statlib after some delay.
Statlib can be accessed at:
http://lib.stat.cmu.edu/
See in particular:
http://lib.stat.cmu.edu/general/Utexas/
The code is also archived at many other sites (at their option). Use
your favorite search engine to find one close to you.
Related Files
A document detailing methods used in DSTPLAN is also available from
the same source. It has not yet been updated to reflect the bug fixes
in the new version.
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