Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: ordered dependent variable
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: ordered dependent variable
Date
Thu, 15 Aug 2013 09:13:03 +0100
I should add that nothing stops you calculating numerical scores or
even assigning them arbitrarily and there are methods that will do
that for you (e.g. correspondence analysis), but there is no single
agreed method to do that, and their applicability is contentious.
The literature in your field will be a guide to what is considered as
widely acceptable. That doesn't stop you doing something different,
but be careful.
Nick
[email protected]
On 15 August 2013 08:50, Nick Cox <[email protected]> wrote:
> Explaining exactly what your dependent variable is would clarify your
> question, but I guess that you have ordered (ordinal, graded) scales,
> such as 5-point scales, indicating relative satisfaction. To apply
> ordinal probit, you would need to code those numerically, say as 1 to
> 5.
>
> Nothing then stops you using exactly the same values in a standard
> regression. No transformation is needed.
>
> But that's a big jump: you are now treating the values as if they were
> interval scale at least. (Being continuous or discrete is not quite
> the main issue.)
>
> So, now expect big arguments from any likely audience, many, perhaps
> most, of whom are likely to regard this as invalid or meaningless or
> at the very least problematic.
>
> "in Stata" doesn't seem important here. The issues are statistical and
> (social) scientific.
>
> Nick
> [email protected]
>
> On 15 August 2013 05:58, Nicole Feliciani <[email protected]> wrote:
>
>> I am new to Stata and I am estimating the effect of holding a partime
>> job on job and life's satisfaction.
>> My dependent variable is an ordered one. I know I can apply an
>> ordered probit, but I would like to perform also an OLS regression.
>> For this purpose I need to transform my ordered variable in a
>> continuos one. Does anyone know how to do it in Stata?
*
* 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/