Date: Tue, 21 Mar 2006 11:12:50 -0500
Reply-To: Peter Flom <Flom@NDRI.ORG>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Peter Flom <Flom@NDRI.ORG>
Subject: Re: HLM?
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>>> "Jing Quan" <JXQUAN@salisbury.edu> 3/21/2006 11:03:49 am >>> wrote
This is a follow-up to my previous post. What I try to accomplish here
is to see if variable z should be included in the estimation, which
be a moderator. I think I can use the t-ratio to test the significance
of c2, but some literature also suggests to test whether the increase
adjusted R-square after including z is significant and suggested to
HLM. But I don't see how HLM can accomplish this.
Thank you Peter for your email. I'm new to this list and did not know
exactly what to ask. I hope this one would clarify what I try to do
Well, welcome to the list!
It would be neat if you could tell us what the variables are, what N
is, what your research question/hypotheses are, where you got the data,
and so on.
I don't know why anyone would recommend HLM for this, if ou could
provide more details, or a cite, that might help.
Just testing those two equations does not answer anything about
moderation - you would also need to test for interactions.