f



Re: SAS vs. SPLUS vs. SAS #3

I don't know much about trials work, but it has been discussed on the r-help list, and there
are definitely people who use R for this type of thing

Peter

-----Original Message-----
>From: Paul Miller <pjmiller_57@YAHOO.COM>
>Sent: Dec 11, 2009 4:09 PM
>To: SAS-L@LISTSERV.UGA.EDU
>Subject: SAS vs. SPLUS vs. SAS
>
>Hello Everyone,
>�
>I’ve recently become interested in sequential clinical trials designs. I’ve purchased a book that discusses the topic called “Analysis of Clinical Trials using SAS: A Practical Guide.” Upon trying to run some of the code samples from the book, I’ve learned that we don’t have Proc IML. Until recently, I was under the impression that, as a data manipulation feature, Proc IML was a part of Base SAS. I was disappointed to learn that this is not the case and was even more disappointed when I learned what it would cost to add IML to our server license.
>�
>So I’m now considering some alternatives. SPLUS has an add-on called SEQTRIAL that can be used for sequential clinical trials designs. I’ve obtained a 30-day trial and spent some time playing around with the SEQTRIAL component. I have virtually no experience using SPLUS, but the software appears to be of good quality and adding SEQTRIAL to our current version of SPLUS would be cheaper than purchasing IML.
>�
>A third possibility would be to use the SEQDESIGN and SEQTEST procedures that became available in SAS 9.2. Although I don’t currently have SAS 9.2, I should have it shortly. One concern I have about these procedures is that they are “experimental.” I believe that SAS Institute normally indicates that such procedures should not be used in the “production environment.” So it’s not clear how I could use these procedures to do work for any of our clients and it’s not clear how long these procedures will remain experimental.
>�
>At this point, I was wondering if anyone out there has experience with any of these options and would be willing to comment on their relative merits. Also, I was hoping someone might be able to comment on the relative merits of SAS vs. SPLUS. My thinking was that if we started using SPLUS, this might give us some additional capabilities that we wouldn’t normally get through SAS.
>�
>Thanks,
>�
>Paul �
>
>�
>�
>�
>�
>
>
>      __________________________________________________________________
>Make your browsing faster, safer, and easier with the new Internet Explorer® 8. Optimized for Yahoo! Get it Now for Free! at http://downloads.yahoo.com/ca/internetexplorer/


Peter L. Flom, PhD
Statistical Consultant
Website: www DOT peterflomconsulting DOT com
Writing; http://www.associatedcontent.com/user/582880/peter_flom.html
Twitter:   @peterflom
0
12/11/2009 10:19:12 PM
comp.soft-sys.sas 142827 articles. 4 followers. Post Follow

0 Replies
945 Views

Similar Articles

[PageSpeed] 24

Reply: