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 20 of 180 for “"Longitudinal Analysis"”.
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Longitudinal analysis of platelet count data
… count dynamics and product failures. Using longitudinal data from the South African National Blood Service (SANBS), I employed linear mixed-effect models to analyse platelet count trajectories and latent class mixed models to uncover donor clusters with distinct patterns. The findings reveal …
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Longitudinal analysis for binary and count data
Longitudinal data sets consist of repeated observations of an outcome over time, and a corresponding set of covariates for each of many subjects. In many fields, multivariate analysis-of-variance is commonly used to analyse longitudinal data. Such an analysis is appropriate when responses for each …
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Longitudinal analysis of three-dimensional facial shape data
… scale effects. Much work has been done in the analysis of two-dimensional shapes depicted by anatomical landmarks placed at points of importance. Less has been carried out in the area of three-dimensional shapes, particularly in terms of growth or change over time. This thesis considers the …
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Outcome selection in longitudinal analysis of immunological data
… explores an outcome selection technique for longitudinal immunological data, addressing current methodological limitations and proposing improvements. The approach integrates statistical modelling with dimension reduction to identify immune outcomes with the most evidence for subgroup …
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A Longitudinal Analysis of a Geography-Based Minority Recruiting Model
The dissertation presents a study of a geography-based minority recruiting program and its participants. The study investigated the postsecondary goals and commitments of participant-students and their knowledge and understanding about geography as major discipline and career path. In addition, …
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Joint Models for Longitudinal Analysis and Competing Risks in Survival Analysis
In longitudinal studies involving assessing 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 …
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A longitudinal analysis of the chiropractic profession from 1996 to 2007
… Canada from 1996-2007. Methods: We conducted a longitudinal cohort study using administrative registration data from 1996-2007. Stickiness and Inflow concepts acted as proxy measures for relative attractiveness. Survival analysis was employed to identify practitioner groups more likely to leave …
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A longitudinal analysis of college-wide and major field grading standards
… to the predictor data of other major fields or longitudinal cohort groups. Evidence of Adaptation-Level grading was found between major GPAs of the major fields in the first two of three cohort groups. However, only the grading of the second cohort was significant at the .05 level. Between each …
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A retrospective longitudinal analysis of phonetic and phonological cleft palate speech characteristics
Longitudinal studies of cleft palate speech (CPS) are rare in number. Most studies focus on phonetic characteristics of speakers with repaired cleft palate.Only few include phonological analysis of CPS. This dissertation was a retrospective, longitudinal analysis of the phonetic and phonological …
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Longitudinal analysis of perceived body image, sport commitment, burnout, and athletic injury
1 PDF file (ix, 96 pages)
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The Development of Anticipatory Nausea in Cancer Chemotherapy: A Prospective Longitudinal Analysis
… of anticipatory nausea using a prospective, longitudinal approach. Eighty new chemotherapy outpatients were interviewed immediately before and after each of their chemotherapy infusions through at least their first six months of treatment. Three major issues were focused upon, (a) …
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A Longitudinal Analysis of Cohort Course-Taking Patterns of High School Graduates
The purpose of this study was to provide a data-based context for examining the claims of recent reports critical of public education by describing the curricular course-taking patterns of students during a period when public school reform mandates were being sought within a state, as well as …
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A longitudinal analysis of disproportionality in statewide exclusionary discipline of students with disabilities
The study examined the state-by-state changes in the rates of exclusionary discipline of students with disabilities compared to their non-disabled peers. Historically, students with disabilities have been excluded at rates that are out of proportion with their population. This study used state …
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A longitudinal analysis of passenger travel disruptions in the National Air Transportation System
… connections. In this thesis, we conduct a longitudinal analysis of passenger travel disruptions in the U.S. over the 2006 - 2010 calendar years and analyze the trends in, and impacts of, various scheduling and operational factors across the years. We illustrate the interdependencies of …
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Friendship problems and suicidality in Mexican-American and European-American adolescents: a longitudinal analysis
… suicidal thoughts or behavior. Compared to other longitudinal studies of friendship factors and suicidality, the current study found that the relationship varies by ethnicity with different friendship factors predicting suicidality for Mexican- and European-American youth. Additionally, …
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A Longitudinal Analysis of Changes in Accounting Curriculum Requirements Since the Perry Commission Report
… efforts to accomplish educational change. The analysis identifies patterns in educational requirements and compiles information that may instruct educational policy discussions. It considers the recommendations of the Beamer Committee, policy statements of the AICPA, and the influences of …
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A Longitudinal Analysis of the Development of Mandarin Chinese in Fourth Grade Chinese Immersion
… pencil-and-paper word work that focused on analysis of characters during the same time period. Texting with classmates using Pinyin input, when replacing multi-component word work, was negatively associated with freewriting output, that is, students who completed word work did better in …
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The Effect of Paternal Education on Child Health in South Africa: A Longitudinal Analysis
… Dynamics Study (NIDS) in order to conduct a longitudinal analysis. This dissertation uses random-effects regression to study the effect of paternal education and presence on height-for-age z-score (HAZ), weight-for-age zscore (WAZ) and perceived health status (PHS) of children aged 0 to 15. …
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