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 65 for “"Random effects model"”.
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A nested random effects model analysis of child survival in Malawi
… Malawi using a modified Cox proportional hazards model which includes family and community random effects in addition to the fixed effect of the covariates. The parameters of the model are estimated using the Gibbs sampler, a Bayesian Markov Chain Monte Carlo (MCMC) method. We believe this to be …
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Statins and Risk of Alzheimer Disease: A Systematic Review and Meta-Analysis
… The objective of this research was to assess the effects of statins in the prevention of Alzheimer disease.</p><p>Methods: A systematic review of MEDLINE (PubMed) was performed to identify all available published prospective studies that evaluated the effect of statin treatment on the incidence of …
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Essays on Semi-parametric Bayesian Econometric Methods
… estimating the widely used Almost Ideal demand model, by either iteration or approximation. Chapter 2 co-authored with Dr. Melvyn Weeks introduces a new semi-parametric Bayesian Generalized Least Square estimator, which employs the Dirichlet Process prior to cope with potential heterogeneity in …
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Case-Mix Adjustment of Adherence Based Pharmacy Quality Indicator Scores
… performance of a classical logistic regression model containing only patient characteristics and a random-effect model including patient characteristics and a pharmacy-specific effect in predicting medication adherence. These models were used to compute three different risk-adjusted scores on …
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Extreme Politics: An Analysis of the State Level Conditions Favoring Far Right Parties in the European Union
Three models are developed to analyze the state level conditions fostering the rise of far right parties in the European Union in the last two decades. The political background of these parties is examined. This study offers a definition for far right parties, which combines several previous …
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Quantile Regression for Panel Data
… They also estimate a classical Gaussian random effects model to account for individual heterogeneity, but this approach precludes estimating effects other than the mean. To get around the problem, we employ the quantile regression panel methods. The analysis shows that the program impact …
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Impact of the tax burden on long run economic growth: A BRICS perspective
… techniques examined in this study are: the fixed effects model, random effects model and the pooled regression model. In evaluating the tax effect on GDP growth, the paper reviews both theoretical and empirical literature. In line with literature that seems to prefer the fixed effect modelling …
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Meta-Analysis of the Predictive Validity of Scholastic Aptitude Test (SAT) and American College Testing (ACT) Scores for College GPA
… 0.36 (95% confidence interval: .32, .39) using a random effects model. There was a significant positive relationship between exam score and college success. Moderators examined were publication status and exam type with no effect found for publication status. A significant effect of exam type was …
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DISPOSITIONAL EMPLOYABILITY AND THE RELATIONSHIP TO CAREER SUCCESS: A META-ANALYSIS
… on the willingness to work aspect of the RAW model of employability of Hogan et al. (2009), in relationship to career success. Willingness to work (W) can be defined as favorably disposed to work hard and take initiative at one’s job. The variables I used to structure the W are proactive …
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Identifying predictors of evolutionary dispersion with phylogeographic generalised linear models
Discrete phylogeographic models enable the inference of the geographic history of biological organisms along phylogenetic trees. Frequently applied in the context of epidemiological modelling, phylogeographic generalised linear models were developed to allow for the evaluation of multiple …
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Essays on Socio-Economic Integration of Migrants in the UK Labour Market: Access (or Lack of Access) to the Professional Class, Gendering of Occupations and Earning Trajectories
… trajectories using a more refined parsimonious random effects model approach. The main findings show that the labour market performance of immigrants differs from that of UK born White in several important ways. The education and experience of immigrants are subject to different ‘rewards’ to …
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Bayesian Hierarchical Latent Model for Gene Set Analysis
… In this thesis, a Bayesian hierarchical latent model was proposed using generalized linear random effects model. The advantage of the approach was that it can easily incorporate prior knowledges when the sample size was small and the number of genes was large. For the covariance matrix of a set …
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Effects of droughts and animal diseases on smallholder farmers’ participation in the South African beef market
… owners to provide empirical evidence on the effects of drought, animal diseases, and the combined impact of both drought and animal diseases on smallholder farmers’ market participation. Since market participation is a binary response variable, the discrete choice logit model was chosen for …
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The Influence of Cost-sharing Programs on Southern Non-industrial Private Forests
This study was undertaken in response to concerns that the decreasing levels of funding for government tree planting cost share programs will result in significant reductions in non-industrial private tree planting efforts in the South. The purpose of this study is to quantify how the funding of …
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The association between interleukin-1 gene polymorphism and periodontitis in adults in Africa: A systematic review
… the discrepancies were resolved by consensus. A random effects model for calculating the odds ratio was conducted using STATA 17 software, which was used for statistical analysis.
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A Jackknife Empirical Likelihood Approach To Goodness Of Fit U-Statistic Testing With Side Information
… occurring nuisance parameters in semiparametric models. The developed theory is applied to derive the empirical-likelihood-based goodness-of-fit tests and confidence sets for U-quantiles with finite many constraints and with growing number of constraints in the Theil estimator based test about …
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An empirical analysis of competition and efficiency in the medical scheme market in South Africa
… utilises an ordinary least squares regression model on panel data to find that closed medical schemes have greater efficiency at 98% than open medical schemes at 96.7%. Based on the Random Effects model output, the regression finds that there is a significant impact of competition (negative) …
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Complications of percutaneous native kidney biopsies in adults in low and middle-income countries: A Systematic review and meta-analysis
… study-specific estimates were pooled through a random-effects model meta-analysis to obtain an overall summary estimate of major complications across studies. Statistical heterogeneity was evaluated by the Cochrane's Q statistic. Results: 35 studies reporting on 18,456 kidney biopsies met the …
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The effect of patient warming on perioperative cardiovascular outcomes in interventional clinical trials: A systematic review and meta-analysis
… was – risk ratio (95% confidence interval from random effects model) - 0.74 (0.11; 4.73) for major adverse cardiovascular events, 1.07 (0.09; 13.03) for myocardial infarction, 0.56 (0.17; 1.85) for myocardial ischaemia, 0.48 (0.19; 1.20) for arrhythmias and 0.77 (0.25; 2.37) for all-cause …
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Análise de acurácia do diagnóstico assistido por computador no diagnóstico de lesões radiolucentes maxilofaciais - uma revisão sistemática e meta-análise
… Joanna Briggs Institute Critical Appraisal tool. Random-effects model meta-analysis was performed and heterogeneity among the included studies was estimated using the I2 statistic. The GRADE tool assessed the quality of evidence and strength of recommendation across included studies. Results: Out …
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