The finite-sample bias approximations used by xtlsdvc
requires an estimate of the regression variance. So
the estimator is implemented into two steps:
1) get the variance estimate from residuals obtained
from some *initial* estimator
2) work out bias approximations and correct LSDV
An help file is available with xtlsdvc (-help xtlsdvc-),
but you might also want to have a look at my
Stata Journal paper (and the references therein):
"Estimation and inference in dynamic unbalanced panel-data
models with a small number of individuals,"
Stata Journal, StataCorp LP, vol. 5(4), pages 473-50
Giovanni
[email protected]:
> The error is this
>
> xtlsdvc lnrgdpl lnrgdpli lnts lnngd
> option initial() required
> r(198);
>
> but i don`t know what is an initial option
> I need a regression of a convergence model
> like this
> lnYit= a + b lnYit-1 + d Xit + ni + vt +uit
> where
> Yit is per capita gdp
> and Xit are population growth and interest rate
>
> Thanks
>
>
> where: - level of per capita income for i�th country in t�th
period.,
> Xi,t � matrix of the variables, which represent the steady state for i�th
> economy (in logarithms),
> - individual effect of i�th country,
> - time specific effect of t�th year,
> - independent stochastic error term.
>
>
> where: - level of per capita income for i�th country in t�th
period.,
> Xi,t � matrix of the variables, which represent the steady state for i�th
> economy (in logarithms),
> - individual effect of i�th country,
> - time specific effect of t�th year,
> - independent stochastic error term.
>
>
> > -xtlsdvc- requires an -initial()- option.
> >
> > Otherwise, to quote the FAQ:
> >
> > "Say exactly what you typed and exactly what Stata typed
> > (or did) in response. N.B. exactly! If you can, reproduce
> > the error with one of Stata's provided datasets or a simple
> > concocted dataset that you include in your posting."
> >
> > Nick
> > [email protected]
> >
> > [email protected]
> >
> >> I`ve tried this
> >>
> >> xtlsdvc depvar varlist
> >>
> >> But It hasn`t funtioned Could you tell me what it`s wrong?
> >>
> >
> > *
> > * 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/
>
>
>
> *
> * 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/
>
--
Giovanni S.F. Bruno
http://ideas.repec.org/e/pbr136.html
Istituto di Economia Politica, Universit� Bocconi
Via U. Gobbi, 5, 20136 Milano
Italy
tel. + 02 5836 5411
fax. + 02 5836 5438
*
* 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/
