Hello,
I am trying to do an interim analysis using the o'brien-flemming method. I found these codes. However I do not know how to edit to input my own data. This seems like a macro. My data includes ID numbers, treatment group, result before and after treatment.
Thank you.
proc seqdesign altref=0.4 pss stopprob errspend ; TwoSidedPocock: design nstages=4 method=poc; TwoSidedOBrienFleming: design nstages=4 method=obf; samplesize model=twosamplemean(stddev=0.8 weight=2); run;
It looks like the code is taken from Example 77.3 of the online user guide here:
Have you tried looking at the explanation of the syntax, which can be found (for example) here?
Registration is open! SAS is returning to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS partner, SAS Innovate is designed for everyone on your team. Register for just $495 by 12/31/2023.
If you are interested in speaking, there is still time to submit a session idea. More details are posted on the website.
Learn the difference between classical and Bayesian statistical approaches and see a few PROC examples to perform Bayesian analysis in this video.
Find more tutorials on the SAS Users YouTube channel.