Cited by 1,864Statistical Methods and ApplicationsStatistical Methods in EpidemiologyStatistical Methods and Bayesian Inference

Assessing proportionality in the proportional odds model for ordinal logistic regression.

Brant, Rollin·1990·Biometrics

Abstract

The proportional odds model for ordinal logistic regression provides a useful extension of the binary logistic model to situations where the response variable takes on values in a set of ordered categories. The model may be represented by a series of logistic regressions for dependent binary variables, with common regression parameters reflecting the proportional odds assumption. Key to the valid application of the model is the assessment of the proportionality assumption. An approach is described arising from comparisons of the separate (correlated) fits to the binary logistic models underlying the overall model. Based on asymptotic distributional results, formal goodness-of-fit measures are constructed to supplement informal comparisons of the different fits. A number of proposals, including application of bootstrap simulation, are discussed and illustrated with a data example.

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Crossref · 10.2307/2532457

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Authors
Brant, R.
Affiliations
University of Calgary (CA)
Corresponding author
Brant, Rollin
Venue
Biometrics
Publisher
JSTOR
Published
1990-12
Volume
46
Issue
4
Pages
1171
ISSN
0006-341X (ISSN-L)
OpenAlex
W2016013569
Cited by
1,864
References
5
Citations by year
2026: 213 · 2025: 135 · 2024: 135 · 2023: 161 · 2022: 168 · 2021: 145 · 2020: 141 · 2019: 99 · 2018: 76 · 2017: 69 · 2016: 68 · 2015: 57 · 2014: 64 · 2013: 51 · 2012: 45
FWCI
0.94
Type
journal article
Language
en
Open access
closed
Locations
  • Biometrics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods and Applications
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods and Bayesian Inference
Keywords
proportional odds model, ordinal logistic regression, proportional odds assumption, goodness-of-fit tests, binary logistic regression, asymptotic distribution, bootstrap simulation, correlated binary responses
MeSH terms
Biometry, Humans, Regression Analysis, Tissue Donors, Models, Statistical, Liver Transplantation

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