A Markov chain model for longitudinal categorical data when there may be non-ignorable non-response

Saling Huang and Morton Brown

Journal of Applied Statistics, 1999, vol. 26, issue 1, 5-18

Abstract: Longitudinal data with non-response occur in studies where the same subject is followed over time but data for each subject may not be available at every time point. When the response is categorical and the response at time t depends on the response at the previous time points, it may be appropriate to model the response using a Markov model. We generalize a second-order Markov model to include a non-ignorable non-response mechanism. Simulation is used to study the properties of the estimators. Large sample sizes are necessary to ensure that the algorithm converges and that the asymptotic properties of the estimators can be used.

Date: 1999
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DOI: 10.1080/02664769922610

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