Re: st: FW: Running Polychoric Principal Component Analysis in STATA

[Abekah Nkrumah <ankrumah@gmail.com>]

Sorry for the error there

Regards

On Wed, Aug 22, 2012 at 3:22 PM, Nick Cox <njcoxstata@gmail.com> wrote:
> -polychoric- is not on SSC. It's on Stas's Missouri website.
>
> On Wed, Aug 22, 2012 at 3:18 PM, Abekah Nkrumah <ankrumah@gmail.com> wrote:
>> Dear Hilda,
>>
>> I have used the polychoric PCA command by Stas you can download it
>> from SSC and it has an adequate help file which you can read. As far
>> as I know you do not need to recode the data into dummies (see the
>> paper publish by Stas Kolenikov and Angels in the Journal of Income
>> and Wealth). It should be possible for you to go ahead and run the PCA
>> with the variables on an ordinal scale. Hope this helps
>
> On Wed, Aug 22, 2012 at 2:59 PM, Essendi H. <H.Essendi@soton.ac.uk> wrote:
>
>>> How can I run Polychoric principal component analysis in STATA? . I have likert scale data on wellbeing and I would like to prepare wealth quintiles based on these subjective responses. The challenge I am facing however is how to prepar e my variables before running this. I am not sure whether I need to recode them into dummy variables or just rung these with all the ordered category?.  Also kindly advice on how to do this step by step.
>>>
>>> Many thanks,
>>> Hildah
>
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