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Re: st: Error: e(sample) information not available


From   Nirina F <fstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Error: e(sample) information not available
Date   Tue, 12 May 2009 20:19:46 -0400

Thank you so much!
N

On Tue, May 12, 2009 at 8:16 PM, Tirthankar Chakravarty
<tirthankar.chakravarty@gmail.com> wrote:
> 1) Type
> clear*
> Rerun your code. Your code should work as it is now.
>
> Also, check your version of -ivreg2- (Baum, Schaffer & Stillman , SSC):
>
> . which ivreg2
> c:\ado\plus\i\ivreg2.ado
> *! ivreg2 2.2.09  17jul2008
> *! authors cfb & mes
> *! see end of file for version comments
>
> 2) Required loop might look like this:
>
> /* begin */
> set more off
> clear*
> use http://fmwww.bc.edu/ec-p/data/wooldridge/mroz.dta
> foreach x of varlist educ motheduc fatheduc {
>        eststo eq`x': ivreg2 lwage exper expersq (`x'=age kidslt6 kidsge6),
> ffirst robust
>        estadd scalar Shea =el(e(first), 1, 1)
> }
> esttab * using pbesample.csv, replace beta star  cells(b(star) se(par
> fmt(2))) stats(r2_a N widstat Shea jp , fmt(2))
> /* end */
>
> T
>
> On Wed, May 13, 2009 at 12:54 AM, Nirina F <fstata@gmail.com> wrote:
>> Hello,
>>
>> 1- I run the following and I am getting the error message: e(sample)
>> information not available
>> r(498); Could you please let me know what I have done wrong?
>>
>> set more off
>> use http://fmwww.bc.edu/ec-p/data/wooldridge/mroz.dta
>> eststo eq1: ivreg2 lwage exper expersq (educ=age kidslt6 kidsge6),
>> ffirst robust
>> estadd scalar Shea =el(e(first), 1, 1)
>> esttab * using pbesample.csv, beta star  cells(b(star) se(par fmt(2)))
>> stats(r2_a N widstat Shea jp , fmt(2))
>>
>> 2- Also, I would like to create a loop that would have a local xvars"
>> educ1 educ2 educ3" which are the different variables that I would like
>> to instrument but not sure on how I should write the loop.
>>
>> Thank you very much in advance for your help
>> N
>> *
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>>
>
>
>
> --
> To every ω-consistent recursive class κ of formulae there correspond
> recursive class signs r, such that neither v Gen r nor Neg(v Gen r)
> belongs to Flg(κ) (where v is the free variable of r).
>
> *
> *   For searches and help try:
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>

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