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Fitting heterogeneous choice models with oglm

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  • Richard Williams

    ()
    (University of Notre Dame)

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    Abstract

    When a binary or ordinal regression model incorrectly assumes that er- ror variances are the same for all cases, the standard errors are wrong and (unlike ordinary least squares regression) the parameter estimates are biased. Hetero- geneous choice models (also known as location–scale models or heteroskedastic ordered models) explicitly specify the determinants of heteroskedasticity in an at- tempt to correct for it. Such models are also useful when the variance itself is of substantive interest. This article illustrates how the author’s Stata program oglm (ordinal generalized linear models) can be used to fit heterogeneous choice and related models. It shows that two other models that have appeared in the liter- ature (Allison’s model for group comparisons and Hauser and Andrew’s logistic response model with proportionality constraints) are special cases of a heteroge- neous choice model and alternative parameterizations of it. The article further argues that heterogeneous choice models may sometimes be an attractive alterna- tive to other ordinal regression models, such as the generalized ordered logit model fit by gologit2. Finally, the article offers guidelines on how to interpret, test, and modify heterogeneous choice models. Copyright 2010 by StataCorp LP.

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    Bibliographic Info

    Article provided by StataCorp LP in its journal Stata Journal.

    Volume (Year): 10 (2010)
    Issue (Month): 4 (December)
    Pages: 540-567

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    Handle: RePEc:tsj:stataj:v:10:y:2010:i:4:p:540-567

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    Related research

    Keywords: oglm; heterogeneous choice model; location–scale model; gologit2; ordinal regression; heteroskedasticity; generalized ordered logit model;

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    Cited by:
    1. Roberta Distante, 2013. "Subjective Well-Being, Income and Relative Concerns in the UK," Social Indicators Research, Springer, vol. 113(1), pages 81-105, August.
    2. W. Robert Reed & Nurul Sidek, 2013. "A Replication of "Meta-Analysis of the Effect of Fiscal Policies on Long-Run Growth" (European Journal of Political Economy, 2004)," Working Papers in Economics 13/33, University of Canterbury, Department of Economics and Finance.
    3. Athina Economou & Christos Kollias, 2012. "Terrorism and Political Self-Placement in European Union Countries," Economics of Security Working Paper Series 73, DIW Berlin, German Institute for Economic Research.

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