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Preemptive power analysis for the consulting statistician novel applications of internal pilot design and information based monitoring systems /Sawrie, David Franklin. January 2007 (has links) (PDF)
Thesis (Ph.D.)--University of Alabama at Birmingham, 2007. / Title from PDF title page (viewed on Feb. 19, 2010). Includes bibliographical references.
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A Bayesian approach to estimating heterogeneous spatial covariances /Damian, Doris. January 2002 (has links)
Thesis (Ph. D.)--University of Washington, 2002. / Vita. Includes bibliographical references (p. 1226-131).
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Semiparametric methods for longitudinal diagnostic accuracy /Zheng, Yingye. January 2002 (has links)
Thesis (Ph. D.)--University of Washington, 2002. / Vita. Includes bibliographical references (p. 174-179).
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Evaluation of fully Bayesian disease mapping models in correctly identifying high-risk areas with an application to multiple sclerosisCharland, Katia. January 2007 (has links)
Disease maps are geographical maps that display local estimates of disease risk. When the disease is rare, crude risk estimates can be highly variable, leading to extreme estimates in areas with low population density. Bayesian hierarchical models are commonly used to stabilize the disease map, making them more easily interpretable. By exploiting assumptions about the correlation structure in space and time, the statistical model stabilizes the map by shrinking unstable, extreme risk estimates to the risks in surrounding areas (local spatial smoothing) or to the risks at contiguous time points (temporal smoothing). Extreme estimates that are based on smaller populations are subject to a greater degree of shrinkage, particularly when the risks in adjacent areas or at contiguous time points do not support the extreme value and are more stable themselves. / A common goal in disease mapping studies is to identify areas of elevated risk. The objective of this thesis is to compare the accuracy of several fully Bayesian hierarchical models in discriminating between high-risk and background-risk areas. These models differ according to the various spatial, temporal and space-time interaction terms that are included in the model, which can greatly affect the smoothing of the risk estimates. This was accomplished with simulations based on the cervical cancer rate of Kentucky and at-risk person-years of the state of Kentucky's 120 counties from 1995 to 2002. High-risk areas were 'planted' in the generated maps that otherwise had background relative risks of one. The various disease mapping models were applied and their accuracy in correctly identifying high- and background-risk areas was compared by means of Receiver Operating Characteristic curve methodology. Using data on Multiple Sclerosis (MS) on the island of Sardinia, Italy we apply the more successful models to identify areas of elevated MS risk.
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Evaluating the predictiveness of continuous biomarkers /Huang, Ying, January 2007 (has links)
Thesis (Ph. D.)--University of Washington, 2007. / Vita. Includes bibliographical references (p. 200-214).
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Beyond the Cox model : extensions of the model and alternative estimators /Sasieni, Peter D. January 1989 (has links)
Thesis (Ph. D.)--University of Washington, 1989. / Vita. Includes bibliographical references ([217]-228).
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Essays on measurement error and nonresponse /Johansson, Fredrik, January 2007 (has links)
Diss. Uppsala : Uppsala universitet, 2007.
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Analysis of aggregate longitudinal data with time-dependent exposure /French, Benjamin. January 2008 (has links)
Thesis (Ph. D.)--University of Washington, 2008. / Vita. Includes bibliographical references (p. 116-123).
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Methodological studies on models and methods for mixed-effects categorical data analysis /Kjellsson, Maria C., January 2008 (has links)
Diss. (sammanfattning) Uppsala : Uppsala universitet, 2008. / Härtill 5 uppsatser.
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Marginal modeling of longitudinal, binary response data : semiparametric and parametric estimation with long response series and an efficient outcome dependent sampling design /Schildcrout, Jonathan Scott, January 2004 (has links)
Thesis (Ph. D.)--University of Washington, 2004. / Vita. Includes bibliographical references (p. 139-144).
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