Mixed-effect Models for Truncated Longitudinal Outcomes with Nonignorable Missing Data

  • Gao S
  • Thi´ebaut R
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Abstract

Mixed effects models are often used for estimating fixed effects and variance components in continuous longitudinal outcomes. An EM based estimation approach for mixed effects models when the outcomes are truncated was proposed by Hughes (1999). We consider the situation when the longitudinal outcomes are also subject to non-ignorable missing in addition to truncation. A shared random effect parameter model is presented where the missing data mechanism depends on the random effects used to model the longitudinal outcomes. Data from the Indianapolis-Ibadan dementia project is used to illustrate the proposed approach.

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Gao, S., & Thi´ebaut, R. (2021). Mixed-effect Models for Truncated Longitudinal Outcomes with Nonignorable Missing Data. Journal of Data Science, 7(1), 13–25. https://doi.org/10.6339/jds.2009.07(1).418

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