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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: Basic question to Count Data models |

Date |
Wed, 27 Feb 2008 17:52:07 -0000 |

The Stata command . search count data points to many possibilities. You need to read a good textbook first. That by Long and Freese pointed to by the above command is certainly a good textbook. Markus Köller I have some basic questions about Count Data Models. I am trying to estimate the total number of children a woman gives birth to dependend on some explanatory variables, like f.e. education_high, education_low and age. F.E. Amount of Children= f(educ_high, educ_low, age) I want to use a Count Data Model, since Poisson distribution seems to be the proper assumption for it. Problem: I donŽt have any idea how to implement it into stata. Does stata have such functions? And what are the commands for them? Another problem: Someone told me that "dispersion" or "under-dispersion" might be a problem with a Count Data Model. I did some research but couldnŽt find anyhting about that. Does anyone of you know whether this is true? And if so, can you give me a hint or literature suggestion, what "under-dispersion" is and how I could face it in my problem? * * 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/

**References**:**st: Basic question to Count Data models***From:*Markus Köller <markus-koeller@web.de>

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