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Author: Graham Kalton
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 180
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Book Description
Author: Graham Kalton
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 180
Get Book Here
Book Description
Author: Graham Kalton
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 180
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 030918651X
Category : Medical
Languages : en
Pages : 163
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Book Description
Randomized clinical trials are the primary tool for evaluating new medical interventions. Randomization provides for a fair comparison between treatment and control groups, balancing out, on average, distributions of known and unknown factors among the participants. Unfortunately, these studies often lack a substantial percentage of data. This missing data reduces the benefit provided by the randomization and introduces potential biases in the comparison of the treatment groups. Missing data can arise for a variety of reasons, including the inability or unwillingness of participants to meet appointments for evaluation. And in some studies, some or all of data collection ceases when participants discontinue study treatment. Existing guidelines for the design and conduct of clinical trials, and the analysis of the resulting data, provide only limited advice on how to handle missing data. Thus, approaches to the analysis of data with an appreciable amount of missing values tend to be ad hoc and variable. The Prevention and Treatment of Missing Data in Clinical Trials concludes that a more principled approach to design and analysis in the presence of missing data is both needed and possible. Such an approach needs to focus on two critical elements: (1) careful design and conduct to limit the amount and impact of missing data and (2) analysis that makes full use of information on all randomized participants and is based on careful attention to the assumptions about the nature of the missing data underlying estimates of treatment effects. In addition to the highest priority recommendations, the book offers more detailed recommendations on the conduct of clinical trials and techniques for analysis of trial data.
Author: Uwe Engel
Publisher: Routledge
ISBN: 1317629701
Category : Psychology
Languages : en
Pages : 429
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Book Description
This state-of-the-art volume provides insight into the recent developments in survey research. It covers topics like: survey modes and response effects, bio indicators and paradata, interviewer and survey error, mixed-mode panels, sensitive questions, conducting web surveys and access panels, coping with non-response, and handling missing data. The authors are leading scientists in the field, and discuss the latest methods and challenges with respect to these topics. Each of the book’s eight parts starts with a brief chapter that provides an historical context along with an overview of today’s most critical survey methods. Chapters in the sections focus on research applications in practice and discuss results from field studies. As such, the book will help researchers design surveys according to today’s best practices. The book’s website www.survey-methodology.de provides additional information, statistical analyses, tables and figures. An indispensable reference for practicing researchers and methodologists or any professional who uses surveys in their work, this book also serves as a supplement for graduate or upper level-undergraduate courses on survey methods taught in psychology, sociology, education, economics, and business. Although the book focuses on European findings, all of the research is discussed with reference to the entire survey-methodology area, including the US. As such, the insights in this book will apply to surveys conducted around the world.
Author: Graham R. Walden
Publisher: Routledge
ISBN: 1135786313
Category : Political Science
Languages : en
Pages : 338
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Book Description
First Published in 1990. The decade of the 1980s witnessed an increasing use of polls and surveys as well as an expanded research effort into public opinion polls and survey research from the economic, historical, legal, methodological, organizational, and political viewpoints. The purpose of this volume is to provide a resource for practitioners, researchers, students, librarians, and others seeking access to this interdisciplinary literature. Instructional guides, handbooks, reference works, textbooks, research studies, and evaluative and critical studies on public opinion polls and survey research published since 1980 are included in this bibliography.
Author:
Publisher:
ISBN:
Category : Wage surveys
Languages : en
Pages : 198
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Book Description
Author:
Publisher:
ISBN:
Category : Labor
Languages : en
Pages : 284
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Book Description
Author:
Publisher:
ISBN:
Category : Employee fringe benefits
Languages : en
Pages : 72
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Book Description
Author: United States. Bureau of Labor Statistics
Publisher:
ISBN:
Category : Employee fringe benefits
Languages : en
Pages : 112
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Book Description
Labour administration pub. Guide to official publications describing statistical sources of wage structure data in the USA - covers hourly and weekly wage rates, labour costs, fringe benefits, etc. References, statistical tables.
Author:
Publisher:
ISBN:
Category : Census
Languages : en
Pages : 564
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Book Description
