Date:         Mon, 19 Dec 2011 09:01:42 -0800
Reply-To:     NHR <noahermesh@gmail.com>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         NHR <noahermesh@gmail.com>
Subject:      Re: Can I compare two within-subjects' dependent variables while
              holding co-variates?
In-Reply-To:  <004701ccbe6d$52825e50$f7871af0$@buffalo.edu>
Content-Type: multipart/alternative;

Hi Gene,
I'm sorry, but I'm quite new at this...
What do you mean by syntax reference?

Thanks again,
NHR

On Mon, Dec 19, 2011 at 6:55 PM, Gene Maguin [via SPSSX Discussion] <
ml-node+s1045642n5086677h94@n5.nabble.com> wrote:

> NHR,
>
> You are going to have to restructure your data and use Mixed. Look through
> the documentation in the syntax reference. I think what you are describing
> is explicitly mentioned, although I am not sure.
>
> Gene Maguin
>
>
> -----Original Message-----
> From: SPSSX(r) Discussion [mailto:[hidden email]<http://user/SendEmail.jtp?type=node&node=5086677&i=0>]
> On Behalf Of NHR
> Sent: Monday, December 19, 2011 11:22 AM
> To: [hidden email] <http://user/SendEmail.jtp?type=node&node=5086677&i=1>
> Subject: Re: Can I compare two within-subjects' dependent variables while
> holding co-variates?
>
> Hi,
> Thanks a lot for your replay.
>
> My dependent variables are PTSD measures. I have 3 sub-scales and one
> total
> measure. These 4 measures refer to two different events, so each
> participant
> has 8 measures (4 for every event - 4 couples).
>
> I wanted to compare, for example the degree of avoidance symptoms between
> event 1 and 2, and so on, regarding each couple. Each participant has 2
> marks/grads, for each measure - one for every event.
> But, than I wand to hold as co-variates the time duration that passed
> since
> each event. I wanted to do that cause there is a significant difference
> between the time duration that passed between the two events.
> While doing an ANOVA or MANOVA, the two co-variates (duration since each
> event) influence the two dependent variables, and that is no good. I
> thinks
> there is no point in holding as co-variate the duration since event 1
> while
> looking at the symptomolgy after event 2.
> So, I was wondering how can I compare my dependent variables in a better
> way?
>
> The participants were all volunteers, who agreed to participate in a
> web-survey.
>
>
> I hope my answers are clear.
> Please let me know if not, and I'll be happy to answer.
>
> Thanks a lot,
> I really appreciate it,
> NHR
>
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