Dear Professor King, my name is Marko Bender and I am research assistant and doctoral candidate at the Technical University Munich. I have a problem on which I already spent a lot of time but did not discover a solution yet. I would be really greatefull, if you could provide some suggestions. I would like to estimate a rare event logistic model (RELOGIT) with an instrumental variable. Is that possible in STATA? The problem is: - IVPROBIT does not correct for rare events - a “self constructed” two stage regression (1st stage: OLS; 2nd stage RELOGIT) does not deliver correct coefficients and standard errors - more flexible estimation procedures like CMP or GLLAMM do not allow to specify user written procedures like RELOGIT Also, is a similar correction as implemented by RELOGIT available for probit results? If so, might it be viable to correct the estimations of e.g. IVPROBIT for rare events? It would be really nice if you could provide me with any suggestions. Kind regards, Marko Bender ____________________________________________________________ Marko Bender Doctoral Candidate / Wissenschaftlicher Mitarbeiter KfW Endowed Chair in Entrepreneurial Finance | Prof. Dr. Dr. Ann-Kristin Achleitner TUM Business School | Technische Universität München (TUM) Arcisstr. 21 | D-80333 München | Germany Tel.: +49 (0)89 289 25189 | Fax: +49 (0)89 289 25188 <mailto:marko.bender@wi.tum.de> marko.bender(a)wi.tum.de | <blocked::http://www.wi.tum.de/ef> http://www.wi.tum.de/ef