Date:         Thu, 17 Mar 2005 15:17:42 -0800
Reply-To:     anne olean <annekolean@YAHOO.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
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From:         anne olean <annekolean@YAHOO.COM>
Subject:      Splitting data
In-Reply-To:  6667
Content-Type: text/plain; charset=us-ascii

Hi all, I have a binary variable X1 in my dataset that
I want to use to split my data, so that I can analyse
it separately for X1 = 0 and X1 = 1. I know I can
simply create two separate files using an "if
statement", however I am wondering if I can avoid
that?
In particular, I want to get the means for each
treatment by week when X1 = 0 and when X1 = 1 (2
treatments, 10 weeks, 2 levels of X1:

proc means data=mydata;
by X1 treatment week;
var y;
output out=outputmeans mean=mymean;
run;

proc print data=outputmeans;
run;

but that doesn't work at all. Do I have to create
separate files?

thanks for any feedback. anne



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