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Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research
book

Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research

by Chul Ahn, Moonseoung Heo, Song Zhang
December 2014
Intermediate to advanced content levelIntermediate to advanced
260 pages
8h 51m
English
Chapman and Hall/CRC
Content preview from Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research
28 Sample Size Calculations for Clustered and Longitudinal Outcomes
2.2.2.1 Example
Reports have established the effectiveness of minimally invasive periodontal
surgery (MIPS) in treating osseous defects [12, 13]. Since these papers were
published, new devices (including a videoscope and ultrasonic tips) have been
incorporated to enhance the effectiveness of the procedure. Haffajee et al. [14]
computed the intracluster correlation coefficients of periodontal measurements
for five groups of treated periodontal disease subjects and one group of un-
treated subjects with periodontal disease. The median intracluster correlation
coefficient (ρ) is 0.067 for clinical ...
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Publisher Resources

ISBN: 9781466556270