help dirmul
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Title

    dirmul -- dirichlet multinomial regression

Syntax

        dirmul depvar [indepvars] [if] [in] , group(varname) [options]

Description

    dirmul fits the dirichlet-multinomial regression model. It is a
    parametric alternative to grouped conditional logit that allows for
    overdispersion. The data must be in the same format as for estimation
    with multin.

Options

    eqcorr Specifies the parameterization in terms of the intraclass
        correlation coefficient

    stmul Uses the results from the grouped conditional logistic as starting
        values.

    strho Set a starting value for rho (must be between 0 and 1). This option
        applies only if you are using the eqcorr option.

    var2 Allows for the introduction of group level variables. These
        variables do not affect the choice probabilities.

    pearson reports the Pearson chi-squared statistic.

Author

Paulo Guimaraes, Division of Research, University of South Carolina.
Email: guimaraes@moore.sc.edu 

References

    Guimaraes, P and Lindrooth, R. 2005.  Dirichlet-Multinomial Regression
    Economics Working Paper Archive at WUSTL, Econometrics, n. 0509001 
    http://129.3.20.41/eps/em/papers/0509/0509001.pdf

Also see