Re: st: ml with a parameter between 0.07 and 1

["E. Paul Wileyto" <epw@mail.med.upenn.edu>]

gen double `am'=0.07+(1-0.07)/(1+exp(-`a'))



Beatrice Crozza wrote:
> Dear all,
>
> I did a maximum likelihood and I constrained one parameter to be
> between zero and one, in this way:
>
> gen double `am'=1/(1+exp(-`a'))
>
> and then I generated the standard error using the delta method.
>
> Now I want to constrain the parameter to be between 0.07 and 1.
>
> How can I do this?
>
> Thank you very much
>
> Best,
> Bea
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>
>   

--
E. Paul Wileyto, Ph.D.
Assistant Professor of Biostatistics
Tobacco Use Research Center
School of Medicine, U. of Pennsylvania
3535 Market Street, Suite 4100
Philadelphia, PA  19104-3309

215-746-7147
Fax: 215-746-7140
epw@mail.med.upenn.edu 

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/