Roger J. Lewis – författare
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2 produkter
2 produkter
E-bok
Engelska, 2019914 kr
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The world-renowned experts at JAMA® explain statistical analysis and the methods used in medical research Written in the language and style appropriate for clinicians and researchers, this new JAMA Guide to Statistics and Methods provides explanations and expert discussion of the statistical analytic approaches and methods used in the medical research reported in articles appearing in JAMA and the JAMA Network journals.This addition to the JAMAevidence® series is particularly timely and necessary because today’s physicians and other health care professionals must pursue lifelong learning to keep up with the ever-expanding universe of new medical science and evidence-based clinical information. Readers and users of research articles must have a firm grasp of the myriad new statistical, analytic, and methodologic approaches used in contemporary medical studies. To provide concrete examples, the explanations in the book link to research articles that incorporate the specific statistical test or methodological approach being discussed.
Häftad, Engelska, 2025
252 kr
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Visual field is the total area of space a person can see when the eyes are focused on a central point. Impairment of the visual field can have significant negative effects on well-being. Individuals with moderate to severe visual field loss may have difficulty performing routine tasks, such as reading, driving, and navigating environments, as well as engaging in social activities. More profound loss leads to greater disability and poorer quality of life. Nearly 8 million people in the U.S. indicate they have blindness or difficulty seeing even while wearing corrective lenses, and the prevalence of visual impairment among U.S. preschool-aged children may be as high as five percent.Testing for visual field impairment involves a combination of hardware, stimuli, testing patterns, and algorithms. The Social Security Administration (SSA) uses the results of such testing to determine whether applicants for disability based on visual field loss qualify for benefits. In response to a request from SSA, the National Academies convened a committee of experts to review the research and science on methods for testing visual field impairment. The resulting report reviews current and emerging practices and known limitations in visual field testing and offers conclusions to inform disability evaluations.