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    A novel approach to latent class modelling: identifying the various types of body mass index individuals

    81853.pdf (348.5Kb)
    Access Status
    Open access
    Authors
    Brown, S.
    Greene, William
    Harris, Mark
    Date
    2020
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Brown, S. and Greene, W. and Harris, M. 2020. A novel approach to latent class modelling: identifying the various types of body mass index individuals. Journal of the Royal Statistical Society. Series A: Statistics in Society. 183 (3): pp. 983-1004.
    Source Title
    Journal of the Royal Statistical Society. Series A: Statistics in Society
    DOI
    10.1111/rssa.12552
    ISSN
    0964-1998
    Faculty
    Faculty of Business and Law
    School
    School of Economics, Finance and Property
    Remarks

    This is the peer reviewed version of the following article: Brown, S., Greene, W. and Harris, M. (2020), A novel approach to latent class modelling: identifying the various types of body mass index individuals. J. R. Stat. Soc. A, 183: 983-1004. which has been published in final form at [https:// doi.org/10.1111/rssa.12552. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

    URI
    http://hdl.handle.net/20.500.11937/81791
    Collection
    • Curtin Research Publications
    Abstract

    © 2020 Royal Statistical Society

    Given the increasing prevalence of adult obesity, furthering understanding of the determinants of measures such as the body mass index (BMI) remains high on the policy agenda. We contribute to existing literature on modelling the BMI by proposing an extension to latent class modelling, which serves to unveil a more detailed picture of the determinants of BMI. Interest here lies in latent class analysis with a regression model and predictor variables explaining class membership, a regression model and predictor variables explaining the outcome variable within BMI classes and instances where the BMI classes are naturally ordered and labelled by expected values within class. A simple and generic way of parameterizing both the class probabilities and the statistical representation of behaviours within each class is proposed, that simultaneously preserves the ranking according to class-specific expected values and yields a parsimonious representation of the class probabilities. Based on a wide range of metrics, the newly proposed approach is found to dominate the prevailing approach and, moreover, results are often quite different across the two.

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