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Re: st: FW: Running Polychoric Principal Component Analysis in STATA
From
Abekah Nkrumah <[email protected]>
To
[email protected]
Subject
Re: st: FW: Running Polychoric Principal Component Analysis in STATA
Date
Wed, 22 Aug 2012 15:25:25 +0100
Sorry for the error there
Regards
On Wed, Aug 22, 2012 at 3:22 PM, Nick Cox <[email protected]> wrote:
> -polychoric- is not on SSC. It's on Stas's Missouri website.
>
> On Wed, Aug 22, 2012 at 3:18 PM, Abekah Nkrumah <[email protected]> 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. <[email protected]> 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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