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 34 for “"fixed effects models"”.
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The Economic Impacts of Forest Pathogens in Washington State: A Hedonic Approach
… Specifically, I estimate a set of hedonic fixed effects models to control for omitted variable bias and spatial autocorrelation. Results show statistically significant impacts on property values in the presence of species specific and aggregate defoliation, suggesting new information for …
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Efficacy of Cognitive Therapy and Pharmacotherapy In Depression: A Meta-Analysis
… using statistical analysis software. Initially, fixed effects models were applied to the data, but due to significant between-group heterogeneity that could not be fully explained by treatment type, mixed effect models were used to account for the residual heterogeneity. Results indicated that …
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Food Environment and Childhood Obesity
… panel estimation, it was found that the fixed effects model fit the data best. Results indicate that an additional supermarket within a one-mile radial of the census neighborhood block center will bring down childhood obesity prevalence by 0.58 percent, whereas associations between …
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Does using social networks lead to better job opportunities? : a direct test
… that the use of social contacts has positive effects on wages and on the other indicators of job quality while some others found negative effects. Previous studies, however, suffered from several methodological limitations such as selecting on the dependent variable or ignoring unobserved …
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Some new types of designs with applications in conjoint analysis
… analysis. Appropriateness of random and mixed effects models, which are different from traditional fixed effects models used for analyzing CA data, is highlighted in several examples.
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Disuguaglianze sociali nella salute, tra eterogeneità individuale e fattori sociali di rischio
… or across cohorts. I first apply growth curves models, a special case of multilevel model for change, that enable us to model individual health trajectories in health and BMI. More precisely, I model the differences in these trajectories (i.e. in both their intercepts and slopes) as a function …
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Three essays on the influence of state policies on transfer enrollment at 4-year institutions
… Education Data System (IPEDS). Panel data models with institution and year fixed effects revealed that after accounting for past values of state appropriations, transfer enrollments were positively related to increases in state appropriations. In the third essay, I provide a state-level …
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An analysis of industrial company failure in the UK and Russia for the 1990s
… firm's age effect. We find that cross sectional models, conditioned on changes in overall economic conditions, dominate simpler models, utilising financial inputs alone, for comparisons of ex ante, out-of sample classificatory accuracy. Thus, the UK data suggest that for the years before and …
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Diversionary Repression in Electoral Autocracies: Crisis Onset, Loss-Domain Conditions, and State Escalation
… 179 countries from 2009 to 2024. Using two-way fixed-effects models, the study measures whether new crises trigger spikes in physical repression or information control, paying close attention to how electoral autocracies in a loss-domain react. To map out the actual causal mechanisms at play, …
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Goal Conflict in the State Children's Health Insurance Program
… appears to decrease spending within states. In fixed-effects models estimating the impact of enrollment of adults and higher-income children on enrollment of targeted children, enrollment of adults was consistently found to negatively impact enrollment of targeted children and enrollment of …
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ESG ratings and financial performance: a case of JSE listed firms.
… between 2015-2019. The panel data regression models were estimated using both random effects and fixed effects models. Results revealed that overall ESG rating has a significantly negative impact on Tobin's Q. No significant effect was noted on other financial performance measures; return on …
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Essays on job search, unemployment, and regulatory compliance
… of opportunities pursued in job search. Using fixed effects models, I show that when the job seeker uses contacts, she pursues jobs that pay less than the jobs she pursues through formal methods. In addition, the analysis show that networks limit the geographical and occupational diversity of …
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Revision knee replacement outcomes and implications for the organisation of care in the NHS: Can regional networks improve outcomes?
… high rates of reoperations. Identifying better models of care delivery is a top research priority in RevKR. Regional networks were introduced in England to improve outcomes through multidisciplinary decision making and complex cases being done by fewer more experienced surgeons and hospitals. …
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Doing Time: Understanding the Dynamic Effects of Paternal Incarceration on Children's Development of Aggressive and Delinquent Behaviors
… of incarcerated fathers. Although studies of the effects of parental incarceration on child outcomes have become increasingly more rigorous, there remain several limitations in the literature. Specifically, prior research has tended to address the relationship from a static framework, by …
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PROPHYLACTIC CLIP PLACEMENT DURING POLYPECTOMY DOES NOT REDUCE THE RISK OF DELAYED BLEEDING: A SYSTEMATIC REVIEW AND META-ANALYSIS
… with 95% confidence interval (CI). Random and fixed effects models were used as appropriate. Heterogeneity among studies was assessed by calculating I² measure of inconsistency. Results: Initial search revealed 418 studies; of which 26 studies were reviewed. Eleven studies (including 4 …
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Essays on Fertility and Fertility Preferences in India
… considerably converged over time using two-way fixed effects models. However, there is still considerable heterogeneity in the implementation of preferences (as manifested by the use of contraception). Accordingly, in the third chapter, I analyze the multilevel sources of variation in the use of …
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School Closure in New York City
… among policymakers with the disappointing effects of previous school improvement policies, and the view that some schools may simply lack the capacity to undertake meaningful improvements. This paper focuses on arguably the most aggressive school closure policies in the nation--those in New …
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Saftey of Covid-19 Vaccines in Real World Studies
… about vaccine safety and associated side effects. This meta-analysis study aimed to evaluate the safety of COVID-19 vaccines among the general population through real-world observational studies, intending to establish reliable evidence-based safety measures.</p> <p>Methods: We conducted …
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The impact of board composition on financial performance of listed corporations in Zambia.
… diversity (BGD). The study adopted the random effects and fixed effects models. Results under the fixed effects model, showed a negative and significant relationship between board size and financial performance (PPP) at 0.05, and positive and significant relationship between board independence …
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The impact of board composition on financial performance of listed corporations in Zambia.
… diversity (BGD). The study adopted the random effects and fixed effects models. Results under the fixed effects model, showed a negative and significant relationship between board size and financial performance (PPP) at 0.05, and positive and significant relationship between board independence …
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