Thanks for your note. There are no mins or maxes. If you have not very
rare events, or too many observations, you'll find that you get the same
results as regular logit. so no harm done. (Be aware tho, that the
biggest differences normally come from calculating quantities of interest
like probabilities and such.)
Best of luck with your research.
Gary King
: Gary King, King(a)Harvard.Edu http://GKing.Harvard.Edu :
: Center for Basic Research Direct (617) 495-2027 :
: in the Social Sciences Assistant (617) 495-9271 :
: 34 Kirkland Street, Rm. 2 HU-MIT DC (617) 495-4734 :
: Harvard U, Cambridge, MA 02138 eFax (928) 832-7022 :
On Fri, 20 Sep 2002, Philip Roessler wrote:
> Dear Dr. Gary King,
>
> I am a graduate student at the University of Maryland working with
> Christian Davenport. He said I should refer to you on a question I have
> about your ReLogit Program for Stata. Is there a minimum number of rare
> observations that should be included in the data, either a minimum
> absolute number or a minimum proportion, when running the ReLogit
> program? For example, I have a dataset with 1900 observations and 19
> (or 1 per cent) of those observations are "yes" observations and the
> rest are "no." Are there too few "yes" observations even for the
> ReLogit statistical program? I know in your International Organization
> article you use the ReLogit program with a dataset that has only 0.3%
> war observations, but over 1,000 absolute observations.
>
> Thank you in advance for your help.
>
> Sincerely,
>
> Philip Roessler
> Research Assistant
> Integrated Network for Societal Conflict Research (INSCR)
>
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