Date: Tue, 21 Jun 2011 15:37:36 -0700
Reply-To: "Parise, Carol A." <PariseC@sutterhealth.org>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: "Parise, Carol A." <PariseC@sutterhealth.org>
Subject: Re: mixed models - time as DV
In-Reply-To: <4E0113D9.2000109@DrKendall.org>
Content-Type: multipart/alternative;
Art,
This appears to work if I use the format: dd-mm-yyyy hh:mm:ss. Any other format and the numbers are not logical. But, the date that showis up is kind of crazy: 16-MAR-1590. I'm a bit concerned that this may not be accurate. Although the time is in the ballpark, I would think that the overall mean i get using descriptives should be just about the same as what i get from this model and it's off by a good amount and it's not.
Thank you!
Carol
________________________________
From: Art Kendall [mailto:Art@DrKendall.org]
Sent: Tuesday, June 21, 2011 2:58 PM
To: Parise, Carol A.
Cc: SPSSX-L@LISTSERV.UGA.EDU
Subject: Re: [SPSSX-L] mixed models - time as DV
try this as a workaround.
Time is in seconds since the start of the Gregorian calendar.
While you have the .spv file open, open a new data file <file><new><data>
Switch to the the output file. highlight and copy the intercept.
Switch to the data file. Paste the intercept.
Click the variables view tab.
change the format to time.
Art Kendall
Social Research Consultants
On 6/21/2011 5:40 PM, Parise, Carol A. wrote:
Hi all,
This one of probably many questions i will likely be posting on using linear mixed models over the next few months. It's my first crack at using this and i'm slowly working through the lingo by reading as much as I can. I read the SPSS technical report on this and i found an example from nice little article that i am using to mess with my data. http://www.indiana.edu/~statmath/stat/all/hlm/hlm.pdf
The article explains the interpretation of the intercept term in the empty model is equivalent to the overall math achievement score.
My data have time in hh:mm:ss as the DV.
In my sample analysis, the scale of the intercept is not in hh:mm:ss and i can't seem to adjust to to be in this format with the "cell properties" when i click on the output.
It would be really helpful to have the correct scale versus just the p-value for interpretation purposes. Anyone have thoughts on how I can do this?
I am running version 14.0 and we won't be upgrading anytime soon.
Thanks much.
Carol
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