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| From | Joerg Luedicke <joerg.luedicke@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: stpiece |
| Date | Tue, 8 Mar 2011 12:17:01 -0500 |
On Tue, Mar 8, 2011 at 11:29 AM, Chiara Mussida <cmussida@gmail.com> wrote: > Dear All, > i'm attempting the the estimate of a picewise constant hazard model by > using STATA 10 IC version. I'm worried because, when I type the > command > stpiece $xlist , tp(2 5 11 23 35 58 180) nohr (the data have already > been stset and the global list is definted) > > the error message: ml model not found > r(304); > > lock the process of estimation. It is strange, since I have the > ml_model ado file, and also I have already estimated this model in the > past with STATA 9. > thanks for any kind of help > regards > CM stpiece is a user written function, so first you should make sure that you really have the latest version properly installed etc.. If that is the case, I would try running the model "manually" with time period dummies. For instance you could try something like: stsplit tp, at(2 5 11 23 35 58 180) tab tp, g(t) stset ... streg t* $xlist, dist(exp) nohr That should produce the same model and if that works, however, there might be something wrong with your stpiece ado-file. hth, J. * * 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/