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The University of Southampton
Southampton Statistical Sciences Research Institute

Research project: Models for longitudinal categorical data

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Longitudinal data arise when repeated observations are made on the same unit, or subject, of observation.

Models and inference procedures need to be sensitive to the possibility of within-subject dependence between observations. Research at S3RI has focussed on modelling binary and ordinal categorical longitudinal data using a flexible family of association/marginal models, the parameters of which have a particularly straightforward interpretation.

Jokinen, J., McDonald, J. W. and Smith, P. W. F. 2006 Meaningful regression and association models for clustered ordinal data. Sociological Methodology, 36, 173-199.

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