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.
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Showing 1 to 6 of 6 for “"Longitudinal method."”.
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A restriction method for the analysis of discrete longitudinal missing data.
… a study. Many researchers often resort to ad hoc methods(e.g. case-deletion or mean imputation) when they are faced with missing data, which can lead to biased results. An alternative to these ad hoc methods is multiple imputation. Sources of missing data due to patient dropout in health related …
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The substance use, sexual behaviour and health needs of young tourists travelling to national and international holiday destinations
… Spain, using both quantitative and ethnographic methods. Secondly, the research measures the changes in individual tourist’s behaviours that take place pre and post-travel across a range of holiday destinations, using a novel three-stage longitudinal method. Thirdly, the research quantitatively …
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On testing the change-point in the longitudinal bent line quantile regression model
… clinical studies involving correlated data (e.g. longitudinal studies) . Our research is motivated by the lack of ideal inference procedures for such models. Our contributions are two-fold. First, we extend the previously reported work on the bent line quantile regression model [Li et al. (2011)] …
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Self-controlled methods for postmarketing drug safety surveillance in large-scale longitudinal data
… to health outcomes. Surveillance can be based on longitudinal observational databases (LODs), which contain time-stamped patient-level medical information including periods of drug exposure and dates of diagnoses. Due to its desirable properties, we focus on the self-controlled case series (SCCS) …
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Essays on the Economics of Education: Structured Transfer Programs, Enrollment Patterns, and Efficiency at Community Colleges
… to student outcomes, this paper takes a longitudinal cohort approach to estimate pathway costs. It suggests a model for estimating costs, revenues, and efficiency metrics for cohorts of students progressing through a community college. The framework is then used to simulate how economic …
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Understanding longitudinal ADCP measurements to determine water velocities for open channel flow
… open channels relies on the historically proven methodology that was primarily focused on accurately determining the discharge of streams and rivers. The traditional standard of practice relies on time-averaged stationary measurements and transect measurements (performed for cross sections …