Date: Mon, 22 Mar 1999 11:23:25 -0400
Reply-To: Luce_D <luce_d@RESEARCH.TRC.UPENN.EDU>
Sender: "SPSSX(r) Discussion" <SPSSX-L@UGA.CC.UGA.EDU>
From: Luce_D <luce_d@RESEARCH.TRC.UPENN.EDU>
Subject: linear regression w/ interaction
My apologies if this is the second time you see this, I got a not deliverable
response the first time around..
I'm trying to run a linear regression on the interaction between two
independent variables, one continuous and one dichotomous (a severity rating
and medication/placebo, respectively). The outcome measure is continuous. I'm
not sure how to run the interaction on spss, and I'm wondering if anyone can
help me with this. I'm expecting that the medication will only be helpful to
those at the higher end of the severity ratings.
Thanks in advance,
Treatment Research Center
University of Pennsylvania