Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"time-varying covariate"”.
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Longitudinal and survival statistical methods with applications in renal medicine
… function. Joint modelling of longitudinal and time-to-event outcome and Cox model with time-varying covariate are considered to answer the first problem. Whilst parameters are estimated by maximum likelihood (ML) using an expectation-maximisation (EM) algorithm for the former model, by partial …
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Joint Models for Longitudinal Analysis and Competing Risks in Survival Analysis
… ordinal disease(s) outcome across multiple time points, ignoring the correlations between the development and transition of the disease status and any informative potential censoring event(s) may lead to bias in the estimation of covariate effects. To address the problems created by these …
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Semiparametric analysis of multivariate longitudinal data
… individuals are measured repeatedly over time and multivariate longitudinal data occur when subjects are measured repeatedly with regard to multiple response variables. Analysis of multivariate longitudinal data can be challenging since it requires accounting for not only correlations …
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Disaggregating Within-Person and Between-Person Effects in the Presence of Linear Time Trends in Time-Varying Predictors: Structural Equation Modeling Approach
… often interested in phenomena that unfold over time within a person and at the same time, relationships between their characteristics that are stable over time. Since variables in a longitudinal study reflect both within- and between-person effects, researchers need to disaggregate them to …
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Developmental Trajectories of Physical Aggression in Low-Income African American and Hispanic Children: Relations to Household Risk and Child Inhibitory Control
… high in physical aggression across all four time points. More boys and African American children were expected to be classified into the high physical aggression group whereas children with higher inhibitory control competency were expected to be classified into the low physical aggression …
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Comparative analysis of cervical disease progression in HIV positive women receiving ART and those not receiving ART in Cape Town, South Africa, from 2002 to 2011
… dependent on cervical screening naivety. At the time of enrolment, ART was not available to these women. However, as ART was rolled out in South Africa, women meeting ART eligibility criteria (at the time, CD4 count ≤ 200 cells/ml) were started on ART. Women were followed up at 6 monthly …