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From |
"Joao Ricardo F. Lima" <jricardofl@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: Lincom after sepov |

Date |
Tue, 24 Jun 2008 20:40:14 -0300 |

Dear Nick, sorry this question, my poor knowledge of Stata or the english language, oks? But whatīs svy sawy? I know what is svy, of course. Best, Joao Ricardo 2008/6/24, Nick Cox <n.j.cox@durham.ac.uk>: > Thanks for the correction to your previous post. > > The same point applies. It is not -sepov- doing this, but whatever it calls. > > Someone else -svy-savvy may be able to help with your main problem. > > Nick > n.j.cox@durham.ac.uk > > Joao Ricardo F. Lima > > Thanks Nick, > > actually, sepov store the values of FGT in e(b), not in e(V). See: > > sepov renagr_nag rennag if famtipo == 1 [w=pesopes2], p(120) > strata(strat) psu(psu) ci meff > (sampling weights assumed) > > Poverty measures for the variable renagr_nag: (unlabeled) > > Survey mean estimation > > pweight: pesopes2 Number of obs = > 849 > Strata: strat Number of strata = > 43 > PSU: psu Number of PSUs = > 153 > Population size = > 394883.36 > > ------------------------------------------------------------------------------ > Mean | Estimate Std. Err. [95% Conf. Interval] Meff > ---------+-------------------------------------------------------------------- > p0 | .1953685 .0173466 .1609916 .2297453 1.644852 > p1 | .0671076 .0064495 .0543262 .079889 1.270128 > p2 | .0327589 .0037762 .0252754 .0402425 1.198951 > ------------------------------------------------------------------------------ > > > Poverty measures for the variable rennag: (unlabeled) > > Survey mean estimation > > pweight: pesopes2 Number of obs = > 849 > Strata: strat Number of strata = > 43 > PSU: psu Number of PSUs = > 153 > Population size = > 394883.36 > > ------------------------------------------------------------------------------ > Mean | Estimate Std. Err. [95% Conf. Interval] Meff > ---------+-------------------------------------------------------------------- > p0 | .0649527 .0079664 .0491652 .0807402 .9895778 > p1 | .0218262 .0033303 .0152263 .0284261 1.086596 > p2 | .0098536 .002091 .0057097 .0139976 1.136367 > ------------------------------------------------------------------------------ > > . matrix list e(b) > > e(b)[1,3] > p0 p1 p2 > y1 .0649527 .02182618 .00985364 > > > I want to compare if 0.0649527 = 0.1953685 statistically, but donīt > known how to do this. > > 2008/6/24 Nick Cox <n.j.cox@durham.ac.uk>: >> Standard advice for this list (more usually ignored than not) is to say >> where user-written stuff you are using comes from. >> >> -sepov- has this source >> >> STB-51 sg117 . . Robust std errors for Foster-Greer-Thorbecke poverty >> indices >> (help sepov if installed) . . . . . . . . D. Jolliffe and A. >> Semykina >> 9/99 pp.34--36; STB Reprints Vol 9, pp.200--203 >> provides estimates of standard errors for the Foster-Greer- >> Thorbecke class of poverty indices; handles complex survey >> designs including stratification and multi-stages >> >> and evidently the authors have moved since then. >> >> A Google for Dean Jolliffe seems to yield a direct hit. I don't know Dean >> and have no way of knowing whether he still supports -sepov-. >> >> But the code remains accessible. -viewsource sepov.ado- and you can look >> at the code and have a stab at answering your own question. You will see >> that your statement is not quite correct. -epov- is not eclass and does >> not store anything in e(). Whatever e(V) you see is left over from >> -svymean-, or so I guess. This may help you move forward. >> >> Nick >> n.j.cox@durham.ac.uk >> >> Joao Ricardo F. Lima >> >> 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, isnīt 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? >> >> I wrote to sepov authors, but their email address change. >> >> The error that the other server returned was: 550 550 5.1.1 Mailbox >> <anastassia.semykina@cerge.cuni.cz> does not exist (state 14). >> The error that the other server returned was: 550 550 5.1.1 Mailbox >> <dean.jolliffe@cerge.cuni.cz> does not exist (state 14). > > * > * 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/ > -- ------------------------------- Joao Ricardo Lima Professor UFPB-CCA-DCFS +553138923914 ------------------------------- * * 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/

**Follow-Ups**:**RE: st: RE: Lincom after sepov***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**References**:**st: Lincom after sepov***From:*"Joao Ricardo F. Lima" <jricardofl@gmail.com>

**st: RE: Lincom after sepov***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**Re: st: RE: Lincom after sepov***From:*"Joao Ricardo F. Lima" <jricardofl@gmail.com>

**RE: st: RE: Lincom after sepov***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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