Dear Prof. Stephen,
thanks for your your answer! That�s exactly what I want.
Best Regards,
Joao Ricardo Lima
2008/6/25 Stephen P. Jenkins <[email protected]>:
>> ------------------------------
>>
>> Date: Tue, 24 Jun 2008 10:08:30 -0300
>> From: "Joao Ricardo F. Lima" <[email protected]>
>> Subject: st: Lincom after sepov
>>
>> Dear all,
>>
>> I'm writing because I want an advice. I'm using sepov to get FGT
>> indexes for two variables. After estimation I would like to compare
> if
>> the results are statistical different. I am trying to use "lincom",
>> but unsucessfull because sepov stores in e(V) only the estimation
> for
>> the last variable, isn�t it?
>>
>> I am doing this:
>>
>> sepov var1 var2 , p(pl) psu (psu) strat (strat) ci meff
>>
>> And I would like something like this
>>
>> lincom p0[var1] - p0[var2]
>>
>> How can I do this? Is there another way to test if the values of FGT
>> indexes are the same?
>
>
> IMHO -sepov- is redundant. Standard errors for Foster-Greer-Thorbecke
> (FGT) poverty indices can be derived straightforwardly using -svy-
> commands. Create for each individual their 'deprivation score' = (1
> - [income/poverty_line])^alpha, -svyset- the data, and then examine
> using -(svy)mean-
>
> For examples, see
> Jenkins, S.P. 2006. Estimation and interpretation of measures of
> inequality, poverty, and social welfare using Stata. Presentation at
> North American Stata Users' Group Meetings 2006, Boston MA.
> http://econpapers.repec.org/paper/bocasug06/16.htm.
>
>
> Note that all the above, and -sepov-, assumes that the poverty line is
> non-stochastic (which would not be the case if defined e.g. as half
> mean income)
>
>
> Stephen
> -------------------------------------------------------------
> Professor Stephen P. Jenkins <[email protected]>
> Director, 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
> Survival Analysis using Stata:
> http://www.iser.essex.ac.uk/teaching/degree/stephenj/ec968/
> Downloadable papers and software: http://ideas.repec.org/e/pje7.html
>
> Learn about the UK's new household panel survey, the United Kingdom
> Household Longitudinal Study: http://www.iser.essex.ac.uk/ukhls/
>
>
> *
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>
--
-------------------------------
Joao Ricardo Lima
Professor
UFPB-CCA-DCFS
+553138923914
-------------------------------
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