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David K. Williams

Researcher at University of Arkansas for Medical Sciences

Publications -  36
Citations -  3923

David K. Williams is an academic researcher from University of Arkansas for Medical Sciences. The author has contributed to research in topics: Telemedicine & Collaborative Care. The author has an hindex of 14, co-authored 33 publications receiving 3139 citations.

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Purposeful selection of variables in logistic regression

TL;DR: An algorithm which automates the purposeful selection of covariates within which an analyst makes a variable selection decision at each step of the modeling process and has the capability of retaining important confounding variables, resulting potentially in a slightly richer model.
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Practice-Based Versus Telemedicine-Based Collaborative Care for Depression in Rural Federally Qualified Health Centers: A Pragmatic Randomized Comparative Effectiveness Trial

TL;DR: Contracting with an off-site telemedicine-based collaborative care team can yield better outcomes than implementing practice- based collaborative care with locally available staff, according to this multisite randomized pragmatic comparative effectiveness trial.

Theoretical Biology and Medical Modelling

TL;DR: The proposed hypertabastic model shows to be a flexible and promising alternative to practitioners in this field and demonstrates an accelerated failure time version of the model by applying it to data from a randomized study of glioma patients who underwent radiotherapy treatment with and without radiosensitizer misonidazole.
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Hyperbolastic growth models: theory and application

TL;DR: A new family of growth models called hyperbolastic models are developed that predict the volumetric growth behavior of multicellular tumor spheroids with a high degree of accuracy and can be a valuable predictive tool in many areas of biomedical and epidemiological research.