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Re: st: SimpleSlopes in Multilevel Models


From   Stas Kolenikov <skolenik@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: SimpleSlopes in Multilevel Models
Date   Sat, 4 Feb 2012 17:07:39 -0500

So what is this EExPOS an interaction of?

On Sat, Feb 4, 2012 at 11:31 AM, Kerstin Alfes <KAlfes@gmx.de> wrote:
> Hello Stas
>
> I am using stata 11.1, this is an example of my syntax
>
> xtmixed logPerformance1 Question33 v_246 ZSchaufeli_Short zpos EExPOS || Team: ZSchaufeli_Short zpos, mle variance
>
> This is the output I get and I would like to probe the interaction term EExPOS further and find out whether the simple slopes are significant.
>
> logPerform~1       Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
>  Question33    .0027937   .0242461     0.12   0.908    -.0447277    .0503151
>       v_246   -.0003632   .0007304    -0.50   0.619    -.0017947    .0010683
> ZSchaufeli~t    .0142171   .0112795     1.26   0.208    -.0078902    .0363244
>        zpos   -.0049291   .0096467    -0.51   0.609    -.0238363    .0139781
>      EExPOS   -.0141973   .0070321    -2.02   0.043      -.02798   -.0004145
>       _cons    .7707479   .0306269    25.17   0.000     .7107203    .8307755
>
> Best wishes
> Kerstin
>
> -------- Original-Nachricht --------
>> Datum: Sat, 4 Feb 2012 10:44:49 -0500
>> Von: Stas Kolenikov <skolenik@gmail.com>
>> An: statalist@hsphsun2.harvard.edu
>> Betreff: Re: st: SimpleSlopes in Multilevel Models
>
>> In Stata, the output of every estimation command is accompanied with
>> the default test that this coefficient is equal to zero (which is
>> sensible for most slopes and correlations, although may not be so
>> sensible for variances). Moreover, every coefficient can be tested
>> with -test- command. Its syntax is daunting for a beginner, but you'd
>> start appreciating it very quickly as you move from your MPlus or
>> LISREL or MLWin experience.
>>
>> If you gave an example of your syntax (that's what FAQ very strongly
>> suggests) and your output, we could help with the specific -test-
>> command.
>>
>> On Sat, Feb 4, 2012 at 10:15 AM, Kerstin Alfes <KAlfes@gmx.de> wrote:
>> > Dear All
>> >
>> > I ran a multilevel regression using the xtmixed command in stata.
>> >
>> > I have a significant interaction term between two level 1 variables and
>> I
>> > would like to test the simple slopes now. It seems that I need the
>> > Asymptotic Covariance Matrix to do this. Does anbody know how to get the
>> > ACOV in STATA? Or, is there an alternative way to test the significance
>> of
>> > the simple slopes?
>> >
>> > Many thanks
>> > Kerstin
>> > --
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>>
>>
>>
>> --
>> Stas Kolenikov, also found at http://stas.kolenikov.name
>> Small print: I use this email account for mailing lists only.
>>
>> *
>> *   For searches and help try:
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>> *   http://www.stata.com/support/statalist/faq
>> *   http://www.ats.ucla.edu/stat/stata/
>
> --
> Kerstin Alfes
>
> Kettelerweg 24
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> Germany
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>
> Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir
> belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/



-- 
Stas Kolenikov, also found at http://stas.kolenikov.name
Small print: I use this email account for mailing lists only.

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


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