I understand what you mean now, Austin. But it is literally 'doesn't
run' , hours spent in exactly the same point. No error messages,
nothing. I concluded (perhaps wrongly) that the system could have had
entered in some kind of endless loop.
I have acquired the 64 bits version quite recently, but haven't yet
installed it. In the meantime, I wish I could do the test.
If you have an idea about how to perform the test, no matter how less
straightforward it can be (I'm ready to work on that) , I would be
really grateful.
Priscila
On 05/06/06, Austin Nichols <austinnichols@gmail.com> wrote:
Priscila--
I would not claim that the use of dummy variables is really the only
way to perform the test you want in Stata; but it's the most
straightforward way most of the time. My point was only that a phrase
like "the regression doesn't run" is unlikely to elicit helpful
responses, unless you relate the specific error messages or
constraints you are hitting. I mentioned two ways to relax a
constraint (more memory; Stata MP) but it is not clear to me that
either would help, in the absence of more info about why "the
regression doesn't run." However, I will note that you might need a
64-bit version of Stata to use more memory.
--Austin
On 05/06/06, Priscila Ferreira <prisferr@gmail.com> wrote:
> Thanks, Austin.
>
> I am currently using Stata 9.2 SE for Linux on a 32 bits processor and
> have 2.5 gb of ram memory available. My model doesn't run in this
> particular machine. It might be the case that if I use another
> architecture the model will run.
>
> So, Austin - do you mean that the use of dummy variables is really the
> only way to perform the test I want in Stata?
>
> Priscila
On 05/06/06, Austin Nichols <austinnichols@gmail.com> wrote:
Priscila Ferreira--
What do you mean when you say
"I suppose
> because the number of variables and observations is too big, the
> regression doesn't run."
precisely?
Do you mean you need more memory or a newer version of Stata that
supports multiple CPUs, or do you mean the regression is infeasible on
any machine?
On 6/4/06, Priscila Ferreira <prisferr@gmail.com> wrote:
> Good afternoon,
>
> After using -streg- with shared frailty, I am trying to test the
> equality of regression coefficients that are generated from the same
> specification (same dependent variable, same vector of regressors),
> estimated on two different samples. But am not able to.
>
> I tried to implement StataCorp's FAQ:
> http://www.stata.com/support/faqs/stat/testing.html, but I suppose
> because the number of variables and observations is too big, the
> regression doesn't run.
--
Priscila Ferreira
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