On 26 February 2013 14:09, daniel klein <klein.daniel.81@gmail.com> wrote:
> Aside from the obvious -- R questions are not the topic to be
> discussed on Statalist -- based on your earlier question
> (http://www.stata.com/statalist/archive/2013-02/msg00960.html) I get
> the impression you switch software, because Stata did not do what you
> wanted.
>
> That is not necessarily a problem, but just some words of caution.
>
> Chaniging to another software, because Stata does not do what you
> want, might not always be the best choice, given that there might be
> good reason why Stat does not do what you want. Just because a(nother)
> software does something, it does not mean that this something makes
> any sense, or is statistically "correct".
>
> In your case the appearant reason -msp- (SSC) does not work with -mi-
> is, that its author did not implement it to work with -mi-. Whether
> there is a good statistical reason remains unclear to me. My point is,
> that in any case you should think carefully about about what you want
> to do. If you, for example, want to combine Loevinger's H, think
> about the distribution of this statistic. Is it normal? If not,
> applying Rubin's combination rules (regardless of software) might not
> be appropriate. This is discussed here:
>
http://www.stata.com/support/faqs/statistics/combine-results-with-multiply-imputed-data/
> along with how to get Stata to combine results from commands that do
> not support -mi-.
>
> btw. Ameliaseems to assume the data to follow a multivariat normal
> distribution, which might not be appropriate with Items used for
> Mokken scale analysis, and you need to think about this, too.
>
> Best
> Daniel
>
> --
> Hi Stata Users
>
> I have run multiple imputations using R's Amelia package and would
> like to use the imputed dataset to analyse Mokken Scale Analysis.
> But mokken requires the object to be a data frame. I tried
> as.data.frame(x) and as.matrix(x) but it says that it cannot coerce
> class amelia into a data frame or matrix.
>
> australia93=as.data.frame(australia93)
> Error in as.data.frame.default(australia93) :
> cannot coerce class '"amelia"' into a data.frame
>
> coefH(australia93)
> Error in check.data(X) : Data are not matrix or data.frame
>
> Any help would be much appreciated.
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
>
--
Laura Schwirz
PhD Candidate and IRCHSS Scholar
Department of Political Science
Trinity College Dublin
Dublin 2
Republic of Ireland
Email: schwirzl@tcd.ie
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/
