Prof. Jenkins,
Thanks for the answer, I'm looking forward for the release of those
programs.
Rafa
______________________________
R.E. De Hoyos
Department of Applied Economics
University of Cambridge
Cambridge, CB3 9DE, UK
Tel: +44 1223 335269
----- Original Message -----
From: "Stephen P Jenkins" <[email protected]>
To: <[email protected]>
Sent: Tuesday, January 20, 2004 4:59 PM
Subject: st: RE: RE: survey data and inequality
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of
> > Daniel Mueller
> > Sent: 20 January 2004 15:10
> > To: [email protected]
> > Subject: st: RE: survey data and inequality
> >
> >
> > > It is quite common to use survey data to compute income
> > inequality and
> > > poverty measures. Usually survey data is stratified so that the
> > > probability of being surveyed varies across households. The
> > -pweight-
> > > and -svy- commands take the "expansion factors" into
> > account, however
> > > non of the income-distribution/poverty commands (ineqdeco, inequal,
> > > rspread, sumdist or
> > > povdeco) allow for the -pweight- option and I don't know how
> > > to use them within the -svy- command.
> > >
> > > How can I use the inequality/poverty commands when I have a
> > stratified
> > > survey (the survey already contains the inverse of the
> > probability of
> > > being surveyed [expansion factors])?
> >
> > -findit poverty- and -findit inequality- will point you to
> > several user-written programs, which might be helpful.
>
> The programs cited will provide the correct /point/ estimates with svy
> data -- just refer to your pweight as an aweight in e.g. -ineqdeco- or
> -inequal7-. The programs don't produce correct standard errors, however
> (or, indeed, any standard errors). -geivars-, based on Cowell (J
> Econometrics 1989) producing estimates of both inequality and sampling
> variances, allowing for household level clustering (but not PSU
> clustering) and weights.
>
> I am developing programs that estimate sampling variances for
> generalised entropy and Atkinson indices, that optionally allow for
> clustered and stratified data. (Please don't ask me for them; I'll
> announce them on this list when they are ready for distribution.)
>
>
>
> Stephen
> -------------------------------------------------------------
> Professor Stephen P. Jenkins <[email protected]>
> Institute for Social and Economic Research
> University of Essex, Colchester CO4 3SQ, U.K.
> Tel: +44 1206 873374. Fax: +44 1206 873151.
> http://www.iser.essex.ac.uk
>
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>
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