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From |
Nick Cox <njcoxstata@gmail.com> |

To |
"statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: comparing regression coefficients across two models with the same dependent variables |

Date |
Fri, 3 May 2013 12:04:56 +0100 |

Try -glm, link(log) f(poisson)- instead. Many earlier comments (e.g. from David Hoaglin) still apply, it seems to me. Nick njcoxstata@gmail.com On 3 May 2013 11:18, James Bernard <jamesstatalist@gmail.com> wrote: > Thanks for your helpful suggestion. It seems -suest- is the > solution.... but I am getting errors: > > But before I elaborate: I got some info form this link and tried the > steps: http://www.ats.ucla.edu/stat/stata/code/suest.htm > > I am using -suest- on a panel Poisson model > > I run model 1 and store its estimates using est store [name 1] > > then model 2 and store its estimates as [name2] > > and then using -suest [name1] [name2] > > this is the error I get: > > unable to generate scores for model low > suest requires that predict allow the score option > r(322); > > Please note that low is the name of the stored estimates On Thu, May 2, 2013 at 10:34 PM, John Antonakis <John.Antonakis@unil.ch> wrote: >> >> This is easily and correctly done with Stata's -suest- command. You can test >> for differences in coefficients across equations as well as sets of >> coefficients, including intercepts. On 02.05.2013 16:12, James Bernard wrote: >>> This may seem simple, but the seems to be no consensus on it. I have >>> two regressions with the same dependent variables >>> >>> I want to compare the same independent variable across these two models: >>> >>> Y=a+b0X+b1Z >>> Y=a+b0X+b1W >>> >>> Now, I want to compare b0 across these two models. Any idea if this >>> can be done in Stata? >>> >>> Comparing two coefficients in the same model is rather discussed and >>> clear, but how about the case I mentioned? (the reason I am doing this >>> is that I am splitting my sample instead of using interaction effects) >>> * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: comparing regression coefficients across two models with the same dependent variables***From:*James Bernard <jamesstatalist@gmail.com>

**References**:**st: comparing regression coefficients across two models with the same dependent variables***From:*James Bernard <jamesstatalist@gmail.com>

**Re: st: comparing regression coefficients across two models with the same dependent variables***From:*John Antonakis <John.Antonakis@unil.ch>

**Re: st: comparing regression coefficients across two models with the same dependent variables***From:*James Bernard <jamesstatalist@gmail.com>

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