Statalist The Stata Listserver


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: =?utf-8?B?UkU6IHN0OiDCtMOwwrjCtDogc3Q6IEhvdyB0byBjaG9vc2Ug?==?utf-8?B?YSBwcm9wZXIgbW9kZWwgaWYgdGhlIGRlcGVuZGVudCA=?==?utf-8?B?dmFyaWFibGUgaXMgd2l0aGluIGJvdW5kcz8=?=


From   "Cheng, Xiaoqiang" <Xiaoqiang.Cheng@econ.kuleuven.be>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: =?utf-8?B?UkU6IHN0OiDCtMOwwrjCtDogc3Q6IEhvdyB0byBjaG9vc2Ug?==?utf-8?B?YSBwcm9wZXIgbW9kZWwgaWYgdGhlIGRlcGVuZGVudCA=?==?utf-8?B?dmFyaWFibGUgaXMgd2l0aGluIGJvdW5kcz8=?=
Date   Mon, 2 Oct 2006 11:43:47 +0200

Thank you very much, it helps a lot.

However, there is a problem now:

-mfx- predicts that:

variable |      dy/dx    Std. Err.     z    P>|z|  [    95% C.I.   ]      X
uba|        -3.05144     1.55749   -1.96   0.050  6.10406  .001175   .004839

And the effect of uba on dependent variable exceeds unit if one std. dev. Of uba changes, certirus paribus? 

Xiaoqiang Cheng

University of Leuven
Tel  +32 16 326853
Fax  +32 16 326796
Mail  Xiaoqiang Cheng
      Center for Economic Studies
      University of Leuven
      Naamsestraat 69
      Leuven,  Belgium
      B3000
Url www.econ.kuleuven.be/xiaoqiang.cheng




-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Maarten buis
Sent: 2006年10月1日 20:49
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: ´ð¸´: st: How to choose a proper model if the dependent variable is within bounds?

Xiaoqiang Cheng:
no, if you use -glm- to estimate a fractional logit the effect should
be interpreted in pretty much the same way as logit results, i.e. the
coefficents are the effects of the explanatory variables on the
"logit-transformed" proportions. You can get the effects on the
proportion using -mfx, predict(mu)-. I've given a presentation on
analysing proportions with Stata at the last London Stata User's
meeting. You can get the slides from
http://ideas.repec.org/s/boc/usug06.html and my website
http://home.fsw.vu.nl/m.buis/ .

HTH,
Maarten

--- "Cheng, Xiaoqiang" <Xiaoqiang.Cheng@econ.kuleuven.be> wrote:
> BTW, since  "glm"  estimates likelihood, should we then interpret the
> coefficients of regressors as probability? 


-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


		
___________________________________________________________ 
NEW Yahoo! Cars - sell your car and browse thousands of new and used cars online! http://uk.cars.yahoo.com/
*
*   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/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index