Description: 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. IMPORTANT NOTE: 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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Item Specifics
All returns accepted: ReturnsNotAccepted
Subject Area: Research Statistics
Educational Level: University
Personalized: No
Level: Advanced
Features: Index
Country/Region of Manufacture: United States
Subject: Research Sample Sizes
Item Length: 9.3in
Item Height: 0.8in
Item Width: 6.5in
Author: Chul Ahn, Song Zhang, Moonseoung Heo
Publication Name: Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research
Format: Hardcover
Language: English
Publisher: CRC Press LLC
Publication Year: 2014
Series: Chapman and Hall/Crc Biostatistics Ser.
Type: Textbook
Item Weight: 17.6 Oz
Number of Pages: 260 Pages