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 19 of 19 for “"Matched case-control study"”.
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Radiological predictors of PCP in HIV-positive adults in South Africa: a matched case-control study
… in high-burden settings. Methods: We conducted a case-control study involving HIV-positive adults with laboratory-confirmed PCP and a matched cohort with non-PCP respiratory presentations at regional hospitals in Cape Town, South Africa (2012 – 2020). The primary objective was to identify CXR …
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Radiological predictors of PCP in HIV-positive adults in South Africa: a matched case-control study
… in high-burden settings. Methods We conducted a case-control study involving HIV-positive adults with laboratory-confirmed PCP and a matched cohort with non-PCP respiratory presentations at regional hospitals in Cape Town, South Africa (2012 - 2020). The primary objective was to identify CXR …
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Role of Dynamic Postural Control Using Functional Movement Assessments in Individuals with Chronic Ankle Instability: Systematic Review and Matched Case-control Study
… the relationship between postural stability control and the FMS scores. Additionally, no previous systematic review of literature has evaluated the evidence that exists related to biomechanical changes in gait among individuals with CAI while wearing ankle support devices. Objective: For the …
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A matched case control study of the nutritional status of newly diagnosed tuberculosis patients and tuberculosis free contacts in Delft, Western Cape
… of adults who present with tuberculosis. This study therefore aims to compare the nutritional status of newly diagnosed pulmonary tuberculosis patients with TB-free controls.Study population & Design: This is a community based case-control study. Forty-three newly diagnosed pulmonary …
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Associations between Selected Dietary Factors, Selected Obesity-Related Metabolic Markers (Leptin, C-peptide, and High-sensitivity C-reactive Protein), and Lung Cancer: A Matched Case-Control Study Nested in the Prospective PLCO Trial
The purpose of the study was to evaluate the associations between selected dietary factors, body mass index (BMI), selected obesity-related metabolic markers, and lung cancer risk as well as histological types in ever-smokers (former and current-smokers). Characteristics of interest included BMI at …
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Semiparametric Regression Methods with Covariate Measurement Error
… out of the likelihood. The first model is the matched case-control study for analyzing clustered binary outcomes. We develop low-rank thin plate splines for the case where a variable measured with error has an unknown, nonlinear relationship with the response. In addition to the semi- and fully …
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Protective Effect of Statin Use in the Progression of Dry to Exudative Age-Related Macular Degeneration
… the risk of progression to exudative ARMD in a matched case-control study. METHODS: An epidemiological study of 61 cases with exudative ARMD matched by age, gender, and race to 61 controls with early, high-risk ARMD determined by prospective ophthalmologic examination. RESULTS: The risk of …
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A case control study to identify and explore associations with sudden death and medications that can prolong the QT interval on the electrocardiograph.
… cardiac arrhythmia. Methods: A community based, matched case control study used post mortem and primary care datasets. Cause of death was most likely due to cardiac arrhythmia. 789 cases were matched to 2357 controls for age, sex and cardiovascular disease at the GP practices. The International …
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Vitamin D status and longitudinal lung function decline in the Lung Health Study
… lung function decline. We conducted a nested, matched case-control study in the Lung Health Study 3 cohort. Cases and controls were continuous smokers with rapid and slow lung function decline, respectively, over approximately 6 years of follow-up. We compared baseline 25(OH)D levels between …
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Factors associated with nutritional status of children aged six to fifty-nine months in Livingstone, Zambia
A matched case-control study was carried out to identify the factors associated with the nutritional status of children in Livingstone district, Zambia. A trained field researcher collected data on demographic, feeding practices and socio-economic factors in matched groups of underweight children …
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Pedestrian Safety in Peru: The role of visible signalization, transit stops and other features of the built environment
… of road fatality victims. The objective of the study was to explore the relationship between signalization for pedestrians, bus stop characteristics, and other features of the walking environment and pedestrian-motor vehicle collisions (PMVCs). <bold>Methods:</bold> A matched case-control study …
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Towards the modulation of the microbiome to control Campylobacter in broiler chickens
… in broiler litter in two studies. A matched case-control study interrogated the relationship between microbiome composition and the isolation of Campylobacter in litter of commercial broiler houses, whereas a cohort study explored the relationship between Campylobacter and the …
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Semiparametric Varying Coefficient Models for Matched Case-Crossover Studies
… contributions to semiparametric modeling for matched case-crossover data. In matched case-crossover studies, it is generally accepted that the covariates on which a case and associated controls are matched cannot exert a confounding effect on independent predictors included in the conditional …
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Host somatic variation between women living with HIV with cervical intraepitheial lesions (CIN3) and their HIV negative counterparts
… with HIV and cervical cancer. Therefore, this study aims to investigate host somatic genetic variation between cervical biopsies obtained from HIV-positive or HIV-negative women with histologically confirmed CIN3 to determine potential differences in genomic landscapes and HPV infection between …
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Categorising variables in medical contexts
… analysis of data from various types of medical study and, by applying non-parametric statistical methodology, provide alternative, more logical rationale for identifying categorisation points. The analysis will concentrate on data from three specific types of medical study -a cohort study with a …
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Semiparametric and Nonparametric Methods for Complex Data
… few decades. For example, in epidemiology, the matched case-crossover study design is used to investigate the association between the clustered binary outcomes of disease and a measurement error in covariate within a certain period by stratifying subjects' conditions. In genomics, …
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Spatial epidemiology of Rhodesian sleeping sickness in recently affected areas of central and eastern Uganda
… is required to allow more effective targeting of control measures and to prevent further spread and possible concurrence with Gambian sleeping sickness. The work presented in this thesis investigates the drivers of the distribution and spread of Rhodesian sleeping sickness in districts of central …
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Stroke and non-compliance with the therapeutic regimen among hypertensive men and women in Gaza Strip
The purpose of this study was to ascertain whether an association exists between non-compliance with the therapeutic regimen (anti-hypertensive medication, dietary restrictions of sodium, weight reduction, exercise program, follow-up health care, and smoking), and development of stroke among …
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Pharmacogenetics of resistant hypertension: evaluating the role of genetic variation in ABCB1, ADBR1, CES1, CYP3A4, CYP3A5, NEDD4L, NOS3, NR3C2 and SCNN1B among South African hypertensive patient
… as well as other novel variants. Therefore, this study set out to investigate the role of genetic variation in nine genes, namely, ABCB1, ADBR1, CES1, CYP3A4, CYP3A5, NEDD4L, NOS3, NR3C2 and SCNN1B, in the development of resistant hypertension in South African patients. Knowledge of …