Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research

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indgår i serie Chapman & Hall/Crc Biostatistics


Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research
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Format:
Bog, hardback
Udgivelsesdato:
19-12-2014
Sprog:
Engelsk
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Accurate sample size calculation ensures that clinical studies have adequate power to detect clinically meaningful effects. This results in the efficient use of resources and avoids exposing a disproportionate number of patients to experimental treatments caused by an overpowered study. Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research explains how to determine sample size for studies with correlated outcomes, which are widely implemented in medical, epidemiological, and behavioral studies.The book focuses on issues specific to the two types of correlated outcomes: longitudinal and clustered. For clustered studies, the authors provide sample size formulas that accommodate variable cluster sizes and within-cluster correlation. For longitudinal studies, they present sample size formulas to account for within-subject correlation among repeated measurements and various missing data patterns. For multiple levels of clustering, the level at which to perform randomization actually becomes a design parameter. The authors show how this can greatly impact trial administration, analysis, and sample size requirement.Addressing the overarching theme of sample size determination for correlated outcomes, this book provides a useful resource for biostatisticians, clinical investigators, epidemiologists, and social scientists whose research involves trials with correlated outcomes. Each chapter is self-contained so readers can explore topics relevant to their research projects without having to refer to other chapters.

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Udgivelsesdato:
19-12-2014
ISBN13:
9781466556263
Vægt:
499 g
Dybde:
20 mm
Bredde:
156 mm
Højde:
235 mm
Nummer i serien:
71
Format:
Hardback
Forfattere
Bibliotekernes beskrivelse 27 Tables, black and white; 7 Illustrations, black and white

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