Re: Logistic Regression with Interactions Categorical DV

Posted by Ryan on May 06, 2014; 7:51pm
URL: http://spssx-discussion.165.s1.nabble.com/Logistic-Regression-with-Interactions-Categorical-DV-tp5725838p5725842.html

It is beyond me why the SPSS developers have yet to provide a TEST statement for GENLIN and GENLINMIXED. It really inhibits one's ability to construct specific contrasts of interest. I hope they are working on it. 

Ryan

On Tue, May 6, 2014 at 3:04 PM, Bruce Weaver <[hidden email]> wrote:

Here's one old thread that may be useful to the OP:

http://spssx-discussion.1045642.n5.nabble.com/GenLinMixed-GEE-or-something-else-for-unbalanced-repeated-measures-data-with-dichotomous-DV-tp5725040.html



Ryan Black wrote

> You could employ a random effects logistic regression via the procedure
> GENLINMIXED or a GEE logistic regression model via the procedure GENLIN.
> The syntax is fairly straightforward, and there are many examples if you
> search the archives:
>
> http://listserv.uga.edu/cgi-bin/wa?S1=spssx-l
>
> or read the manual.
>
> Ryan
>
>
> On Tue, May 6, 2014 at 1:30 PM, Arakashi <

> arakashi@

> > wrote:
>
>> I have a 2 (group: patients, controls) between subject X 2 (Task 1, Task
>> 2)
>> within subjects X 3 (Trial type 1, Trial type2 and Trial type3) within
>> subjects.  My DV is Accuracy (binary, yes or no).
>>
>> My data is not normally distributed because accuracy is at ceiling, so I
>> was
>> going to use logistic regression.
>> However, I cannot for the life of me figure out what to do with the
>> Accuracy
>> data since it's categorical/binary.  I need to be able to look at the
>> interactions…
>>
>> For the reaction time data, I used the following syntax to explore the
>> main
>> effects and interactions (RT was for correct trials only):
>> MIXED Probe.RT WITH Condition Trial Group
>> /FIXED=Condition Trial Group Condition*Group Trial*Group Condition*Trial
>> Condition*Trial*Group | SSTYPE(3)
>> /METHOD=reml
>> /PRINT = SOLUTION TESTCOV
>> /RANDOM=INTERCEPT | SUBJECT(Subject)
>>
>> If anyone could help me with the syntax for the Accuracy data, I'd be so
>> so
>> grateful.
>>
>>
>>
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