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 96 for “"Random Effect"”.
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Bayesian modelling of mixed outcome types using random effect.
… and continuous responses simultaneously using random effects. We also extend these models to overcome the bias in parameter estimation due to ignorance of skewness of the continuous response, a misclassified covariate, and a zero-inflated discrete response. Simulation studies indicate that our …
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An ecological adjusted random effect model for violent and property crime in Windhoek (2011-2016)
… observations are correlated in ways that require random effects. The present study investigates ecological factors influencing Violent and Property crime in Windhoek by using data obtained from the Windhoek police over the period of six consecutive years (20 I I to 20 16). The ecological concepts …
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On the multivariate components of variance problem
… on the variance components in univariate mixed effect models have been developed and extensively used in many fields. Development for multivariate mixed models has been relatively limited. One important issue in the multivariate problem is determining the rank of a covariance component. Testing …
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A Bayesian solution to non-convergence of crossed random effects models
… combinations of subjects and stimuli, crossed random effects models simultaneously take into account both fixed effects and random effects of the subjects and stimuli; however, maximum likelihood estimation (MLE) and restricted maximum likelihood (REML) estimation often encounter convergence …
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The effect of capital structure on profitability of manufacturing companies in Tanzania
This study analyzed the effect of capital structure on profitability of listed manufacturing companies in Tanzania using panel data of six companies listed in the Dar es Salaam Stock Exchange during a 5 year period. The period was from 2009 to 2013 in which 30 observations were obtained. Panel data …
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The Effectiveness of Teledentistry Versus In-Person Examination on Dental Caries Evaluation
Objective: To determine the effectiveness of teledentistry versus in-person examination for dental caries diagnosis. Methods: This is a systematic review and meta-analysis studies comparing the effectiveness of teledentistry versus in-person examination for dental caries diagnosis. The eligibility …
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An analysis of disclosure of social and environmental responsibility and stakeholders perceptions : the case of Jordan
… of local external factors on CSED practices. The Random-Effect Model was the most appropriate analysis technique to analyse possible relationships between internal factors and the level of CSED, and the stakeholders' views were evaluated through the use of open critical discussion to ascertain the …
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An analysis of the impact of capital structure on the financial performance of firms listed on the Namibian stock exchange
… panel data regression with pooled, fixed effect and random effect regression. Among the three methodologies, this study found that random effect regression is more appropriate to understand the proposed relationships in model 1 (return on equity) and model 2 (return on assets) in relation …
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The Effect of Capital Structure on Profitability of Listed Manufacturing Companies in Tanzania
Researcher used this study to measure the effect of capital structure on Performance of Public listed companies in DSE Tanzania using a panel data of six companies during the 5 year period, from 2009 to 2013 which created 30 observations. Panel data for the selected companies were generated and …
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Efficient Bayesian analysis of spatial occupancy models
… (ICAR) prior model to specify the spatial random effect in our sampler. We also develop OccuSpytial, a statistical package implementing our Gibbs sampler in the Python programming language. The aim of this study is to highlight the computational efficiency that can be obtained by employing …
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Analysis of clustered competing risks with application to a multicentre clinical trial
… hazards model, for examining the covariate effects on the hazard function; and (iv) The accelerated failure time model, for examining the covariate effects on the survival function. Nonetheless, in time-to-event endpoints assessment, if subjects can fail from multiple mutually-exclusive …
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A nested random effects model analysis of child survival in Malawi
… 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 the first time the method has been used for …
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Case-Mix Adjustment of Adherence Based Pharmacy Quality Indicator Scores
… 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 adherence-based pharmacy quality indicators: based on …
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The impact of environmental accountability on firm corporate lobbying behaviour: an empirical investigation of US listed firms
… lobbying spending. After running both the fixed effect and random effect models along with the Hausman test to determine which model was best applicable to the hypothesis, the random effect model illustrated optimal results concluding that firms that lobby more tend to be poor environmental …
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Fixed versus Mixed Parameterization in Logistic Regression Models: Application to Meta-Analysis
… fixed intercept generalized model (GLM), random intercept generalized mixed model (GLMM), and conditional logistic regression (clogit) are compared in a meta-analysis of 43 studies assessing the effect of diet on cancer incidence in rats. We also perform simulation studies to assess …
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Age, period, and cohort effects on trust of government in rural America.
… age-period-cohort with cross-classified random effect modeling (HAPC-CCREM) and a span of thirty-five years of empirical data, I address the linkage between macro-level socioeconomic conditions and institutional trust. I hypothesize that rural communities have experienced significant …
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Censored Regression Models With Applications to Infrastructure Degradation Studies
… or censored data. For correlated measurements, random effect models and generalized estimating equation methods for censored data are developed. A general argument about the theoretical bias for the GEE method, both in the censored and uncensored case, provides a criteria for deciding when …
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Random Effects Selection In Bayesian Accelerated Failure Time Model With Correlated Interval Censored Data
… of interpretation. Variable selection and often random effect selection in case of clustered data becomes crucial in such applications. We propose a Bayesian method for random effects selection in mixed effects accelerated failure time models. The proposed method relies on Cholesky decomposition …
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Diversification, ownership structure and firm performance: A South African case study
… an effort to determine if diversification is an effective strategy in enhancing firm performance (which is measured by Tobin's Q) in South African firms. Fixed effect regression analysis is used on a sample of 164 firms during the period 2010 to 2019. For comparison purposes, the study also …
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Identifying predictors of evolutionary dispersion with phylogeographic generalised linear models
… positive rate can be controlled by including a random effect term, thus allowing unobserved sources of rate variation. Finally, we apply this random effects model to three recently published datasets and contrast the results of analysing these datasets with those obtained using the standard …
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