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 25 for “"nonresponse"”.
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Bayesian spatial models for adjusting nonresponse in small area estimation
… AT AUTHOR'S REQUEST.] There are two kinds of nonresponse: item nonresponse and unit nonresponse. Inferences made from respondents about the population of interest will be subject to nonresponse bias in both situations. When the population of interest is binary and nonresponse has a degree of …
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Finite Mixture Model Specifications Accommodating Treatment Nonresponse in Experimental Research
… and further are unsuitable in cases of treatment nonresponse. In signal processing, researchers have successfully extracted multiple signals from data streams with Gaussian mixture models, where their use is well matched to accommodate researchers in this predicament. While the mathematics …
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The Time Order of Response and Nonresponse Bias in Mail Surveys
Made available in DSpace on 2015-05-12T17:05:06Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6202882.PDF: 3181374 bytes, checksum: d3cd4eb6626a7fb86e3e8de5bb81894e (MD5) Previous issue date: 1962
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Nonparametric prediction in survey sampling and its application to the nonresponse problem
… finite population mean (also in the presence of nonresponse) with a nonparametric regression model. The simulations demonstrate in both the cases of full response and nonresponse, that if the underlying point scatter is linear then the GRE is the best choice. On the other hand if the point …
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The Value of Wildlife Watching Recreation and Techniques for Addressing Nonresponse in Nonmarket Valuation Surveys
… explored in this dissertation is the issue of nonresponse in nonmarket valuation surveys. The results of this dissertation are useful for wildlife and land managers interested in obtaining theoretically consistent values of wildlife watching recreation using a combination of TCM and CVM data. …
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Variability in Exercise Responsiveness Among Older Adults: An Examination of Predictors and Patterns of Nonresponse to Exercise in Peripheral Artery Disease
… adults, little is known about the prevalence of nonresponse to exercise in this population. Supervised exercise therapy (SET) is the primary guideline-recommended therapy for the treatment of symptomatic peripheral artery disease (PAD), yet variability in response to outcomes in this population …
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Sources of error in mobile survey data collection
… survey data collection: measurement error and nonresponse. Chapter 1 examines how the diagonal screen size of a mobile device affects measurement error. Using data from a non-mobile-optimised web survey, I compare data quality between screen size groups. Results suggest that data quality mainly …
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A comparison of participants and non-participants in a serum sample survey in Texas City, Texas.
… advanced age being related to less likelihood of nonresponse in all ethnicities except in Non-Hispanic Blacks, where the direction was the opposite. A comparison of respondents and nonrespondents across ethnicities showed no additional factors, with the exception of results within US-born …
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Applications of Paradata in Survey Design and Analysis
… 1 expands on the use of call record data for nonresponse investigation in face-to-face surveys. By focusing on the relatively underexplored analysis of longitudinal call record data in household surveys, it considers association between Wave 1 call record sequences and response outcomes in …
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Comparison of three survey methods applied to the recreational rock lobster fishery of Western Australia.
… with high response rates, effectively eliminate nonresponse bias. However, they still suffer from recall bias when the recall period is greater than two months. Telephone diary surveys are free of non-response bias and recall bias and provide the most accurate estimates of effort and catch. In …
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Insights in Response to Statewide COVID-19 Sampling in Indiana
… model, allowing for the adjustment for nonresponse. These finding indicate that persons of non-White race and persons of Hispanic ethnicity had highest risk of exposure to the virus. Understanding the disparity in health in various racial and ethnic populations and addressing how …
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Approximate Bayesian approaches and semiparametric methods for handling missing data
… Bayesian approach is developed to handle unit nonresponse with parametric model assumptions on the response probability, but without model assumptions for the outcome variable. The proposed Bayesian method is also extended to incorporate the auxiliary information from full sample. In second …
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Evaluating the Value of the Internet for the Collection of Scientific Data (Use, Harvest, and Attitudes) From Anglers
… due to incomplete email coverage and internet nonresponse, online survey data was comparable to both mail surveys. Agencies can consider appropriately conducted internet surveys as an effective stakeholder “sampling gear” when collecting information necessary for fisheries management. These …
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Methods for analysing complex panel data using multilevel models with an application to the Brazilian labour force survey
… in the form of panel attrition and intermittent nonresponse.<br/><br/>Methods are developed to handle this type of data complexity. These methods follow the Multilevel Model framework which is reviewed. Longitudinal growth curve models accounting for the complex data hierarchy are fitted. …
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Evaluating the Impacts of Respondent Errors in ARMS: A Case of Farm Service Agency Loans
… agricultural sector in the United States. Since nonresponse and inaccurate reporting may cause significant bias in statistical analysis, research was conducted to determine the magnitude of response error on the farm debt section of the ARMS Phase III. A multinomial logit model identified …
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Fine-Scale Mechanisms Influencing Germination Success, Seedling Growth and Survival in an Alpine Forest-Tundra Ecotone
… sites studied. One of the explanations for the nonresponse of treelines is based on reproductive limitations including seed production, germination, establishment and growth of young seedlings. To that end, I studied the white spruce (Picea glauca) alpine treeline in the Kluane region of …
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Clients as Voting Board Members: A Mixed Methods Examination of San Diego County Nonprofit Human Services Organizations
… survey resulting in a response rate of 22%. A nonresponse-bias test suggested that there was no significant difference between the responding organizations and the population.</p> <p>Of the 61 respondents, 14 indicated they had at least one client on their organization’s board of directors. The …
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Advancing Global Tobacco Control: Exploring Worldwide Youth Attitudes and Behaviors toward Tobacco Use and Control
… after the sample was weighted for design effect, nonresponse patterns and poststratification. Unadjusted and adjusted odds ratios along with 95% confidence intervals were reported.</p> <p>Around 14% of never-smoking youth were susceptible to smoking worldwide. Around 40% and 50% youth were exposed …
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Assessing and Improving Data Quality in Linked Panel Surveys: With a Focus on Panel and Linkage Consent (Bias)
… data quality in the first panel wave, namely nonresponse bias, panel consent bias, linkage consent bias, and validity. The framework is flexible as it covers the option of improving data quality through repeated requests for panel and linkage consent, and can therefore be applied to unlinked …
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