BookmarkSubscribeRSS Feed
Uche_Okoro
Fluorite | Level 6

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;

 

1 REPLY 1
Norman21
Lapis Lazuli | Level 10

It looks like the code is taken from Example 77.3 of the online user guide here:

 

https://support.sas.com/documentation/cdl/en/statug/63033/HTML/default/viewer.htm#statug_seqdesign_s...

 

Have you tried looking at the explanation of the syntax, which can be found (for example) here?

 

https://support.sas.com/documentation/cdl/en/statug/63033/HTML/default/viewer.htm#statug_seqdesign_s...

Norman.
SAS 9.4 (TS1M6) X64_10PRO WIN 10.0.17763 Workstation

SAS Innovate 2025: Save the Date

 SAS Innovate 2025 is scheduled for May 6-9 in Orlando, FL. Sign up to be first to learn about the agenda and registration!

Save the date!

What is Bayesian Analysis?

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.

SAS Training: Just a Click Away

 Ready to level-up your skills? Choose your own adventure.

Browse our catalog!

Discussion stats
  • 1 reply
  • 964 views
  • 0 likes
  • 2 in conversation