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From |
Laura Giuliano <giuliano@econ.Berkeley.EDU> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: clogit problem |

Date |
Mon, 02 Sep 2002 12:18:45 -0700 |

Dear Statalisters, I am trying to estimate a fixed effects (conditional) logit model predicting the probability that a newly hired employee in a given establishment is white as a function of the hiring manager's race, conditional on the number of white hires in the establishment. I have many observations (typically over 100) per store and many positive outcomes per establishment (also many negative ones). The race of the hiring manager changes in many, but not all, establishments. There are about 1500 establishments. After the first iteration, I get log likelihood = -8.988e+307, and stata stops and prints out an empty table (see output below). I have had some success running the same regression using smaller subsamples -- with fewer observations per store -- from the same data set. I'd greatly appreciate any explanations and/or suggestions. Thanks very much! - Laura Giuliano . clogit white mblack mhisp masian mother t2-t30, group(store) note: multiple positive outcomes within groups encountered. note: 114 groups (6827 obs) dropped due to all positive or all negative outcomes. Iteration 0: log likelihood = -8.988e+307 Conditional (fixed-effects) logistic regression Number of obs = 253398 LR chi2(33) = . Log likelihood = . Prob > chi2 = . ------------------------------------------------------------------------------ white | Coef. Std. Err. z P>|z| [95% Conf. Interval] -------------+---------------------------------------------------------------- mblack | . . . . . mhisp | . . . . . masian | . . . . . mother | . . . . . t2 | . . . . . t3 | . . . . . etc. --------------------------------------------------- Laura Giuliano Department of Economics 549 Evans Hall, MC 3880 University of California, Berkeley phone: (510) 526-9490 email: giuliano@econ.berkeley.edu * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: clogit problem***From:*SamL <saml@demog.berkeley.edu>

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