Multivariate-t linear mixed models with censored responses, intermittent missing values and heavy tails

TI Lin, WL Wang - Statistical Methods in Medical Research, 2020 - journals.sagepub.com
Multivariate longitudinal data arisen in medical studies often exhibit complex features such
as censored responses, intermittent missing values, and atypical or outlying observations …

Flexible modeling of multiple nonlinear longitudinal trajectories with censored and non-ignorable missing outcomes

TI Lin, WL Wang - Statistical Methods in Medical Research, 2023 - journals.sagepub.com
Multivariate nonlinear mixed-effects models (MNLMMs) have become a promising tool for
analyzing multi-outcome longitudinal data following nonlinear trajectory patterns. However …

Multivariate longitudinal data analysis with censored and intermittent missing responses

TI Lin, VH Lachos, WL Wang - Statistics in medicine, 2018 - Wiley Online Library
The multivariate linear mixed model (MLMM) has emerged as an important analytical tool for
longitudinal data with multiple outcomes. However, the analysis of multivariate longitudinal …

Model-based time-varying clustering of multivariate longitudinal data with covariates and outliers

A Maruotti, A Punzo - Computational Statistics & Data Analysis, 2017 - Elsevier
A class of multivariate linear models under the longitudinal setting, in which unobserved
heterogeneity may evolve over time, is introduced. A latent structure is considered to model …

On moments of folded and truncated multivariate Student-t distributions based on recurrence relations

CE Galarza, TI Lin, WL Wang, VH Lachos - Metrika, 2021 - Springer
The use of the first two moments of the truncated multivariate Student-t distribution has
attracted increasing attention from a wide range of applications. This paper develops …

Multivariate linear mixed models with censored and nonignorable missing outcomes, with application to AIDS studies

TI Lin, WL Wang - Biometrical Journal, 2022 - Wiley Online Library
The analysis of multivariate longitudinal data could encounter some complications due to
censorship induced by detection limits of the assay and nonresponse occurring when …

Linear mixed effects models for non-Gaussian continuous repeated measurement data

Ö Asar, D Bolin, PJ Diggle… - Journal of the Royal …, 2020 - academic.oup.com
We consider the analysis of continuous repeated measurement outcomes that are collected
longitudinally. A standard framework for analysing data of this kind is a linear Gaussian …

Scale mixture of skew‐normal linear mixed models with within‐subject serial dependence

FL Schumacher, VH Lachos, LA Matos - Statistics in medicine, 2021 - Wiley Online Library
In longitudinal studies, repeated measures are collected over time and hence they tend to
be serially correlated. These studies are commonly analyzed using linear mixed models …

Finite mixture modeling of censored data using the multivariate Student-t distribution

VH Lachos, EJL Moreno, K Chen… - Journal of Multivariate …, 2017 - Elsevier
Finite mixture models have been widely used for the modeling and analysis of data from a
heterogeneous population. Moreover, data of this kind can be subject to some upper and/or …

Model-based clustering of censored data via mixtures of factor analyzers

WL Wang, LM Castro, VH Lachos, TI Lin - Computational Statistics & Data …, 2019 - Elsevier
Mixtures of factor analyzers (MFA) provide a promising tool for modeling and clustering high-
dimensional data that contain an overwhelmingly large number of attributes measured on …