Re: st: RE: prtest and fweights

[Richard Williams <Richard.A.Williams.5@nd.edu>]

At 12:53 PM 9/22/2004 +0100, Ron�n Conroy wrote:
> Nick Cox wrote:
>
> > I can't comment on why not. I guess no one asked, or no one thought of 
> > doing it.
> > For the moment,
> > preserve expand
> > prtest restore
> But beware  of -expand-. If an observation represents a zero frequency, it 
> will be retained. You will see a warning but it's a behaviour that you 
> might not have anticipated.
>
> I transcribe tables from papers that I am reviewing into Stata frequently, 
> to cross-check stats, and it's easy to transcribe a zero without 
> remembering that this will create a single observation in the expanded dataset.
Thanks Nick.  And good point, Ronan, I'd overlooked that problem, mostly 
because I don't think I've encountered it before.  Another alternative is 
to use -prtesti-, which might be the quickest and simplest thing if, as you 
say, you were transcribing a table and the only thing you wanted to do was 
run -prtest- on it.  But adding weights to -prtest- would seem like a 
simple enough thing to do.


-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
FAX:    (574)288-4373
HOME:   (574)289-5227
EMAIL:  Richard.A.Williams.5@ND.Edu
WWW (personal):    http://www.nd.edu/~rwilliam
WWW (department):    http://www.nd.edu/~soc


*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/