Hi SAS Friends,
Am looking for examples of how to use the PROC SEQDESIGN procedure when adding an interim FUTILITY analysis only to a study design. All examples seen so far in the SAS PROC SEQDESIGN Manual and meeting papers include an interim analysis for efficacy with a futility analysis added. However none with futility alone.
For example, the following code:
The above code generates efficacy and futility boundaries, however if the efficacy line is deactivated (as /*method(reject)=errfuncobf */) then the code will not run and the following error is produced:
ERROR: Methods for all boundaries must be specified in the DESIGN statement if more than one
stage is specified.
Any suggestions how produce an interim futility analysis only, using the above code, or any SAS code, would be greatly appreciated.
Thank you !
R
I do not use PROC SEQDESIGN myself, but I notice in the doc that the syntax supports
STOP=ACCEPT
STOP=REJECT
Is that useful?
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.
Find more tutorials on the SAS Users YouTube channel.