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Activity Number: 600
Type: Contributed
Date/Time: Thursday, August 6, 2009 : 10:30 AM to 12:20 PM
Sponsor: Section on Statistics in Epidemiology
Abstract - #305781
Title: Longitudinal Analysis of Intraclass Correlation Coefficients
Author(s): Aiyi Liu and Enrique Schisterman and Chunling Liu*+
Companies: National Institute of Child Health and Human Development and National Institutes of Health and The Eunice Kennedy Shriver National Institute of Child Health and Human Development
Address: Executive 6100 Blvd, Rockville, MD, 20852,
Keywords: Intraclass correlation coefficient ; biomarker ; BioCycle Study
Abstract:

Intraclass correlation coefficient is a common index of the inherence among repeated measurements, and an important indicator of the accuracy of an instrument in measuring the levels of a biomarker. We propose several approaches to investigate whether the intraclass correlation coefficient varies over times at which measurements are collected. Data from the BioCycle Study are used to exemplify the methods.

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