This is the program for the 2010 Joint Statistical Meetings in Vancouver, British Columbia.

Abstract Details

Activity Number: 620
Type: Topic Contributed
Date/Time: Thursday, August 5, 2010 : 8:30 AM to 10:20 AM
Sponsor: Biopharmaceutical Section
Abstract - #307176
Title: Heterogeneity in the Random-Effects Population
Author(s): Chul Ahn*+ and Yunling Xu
Companies: FDA/CDRH and FDA/CDRH
Address: 10903 New Hampshire Avenue , Silver Spring, MD, 20993,
Keywords: variance homogeneity ; linear mixed-effects model ; score statistic ; random effects ; heterogeneity ; diagnostic test
Abstract:

This paper investigates the variance homogeneity (constant variance) assumption for random effects in the linear mixed-effects model and proposes a method for modeling potential heterogeneity through the dependence of random effects variance on cluster-level covariates. We also derive a diagnostic test for heterogeneity based on score statistic.


The address information is for the authors that have a + after their name.
Authors who are presenting talks have a * after their name.

Back to the full JSM 2010 program




2010 JSM Online Program Home

For information, contact jsm@amstat.org or phone (888) 231-3473.

If you have questions about the Continuing Education program, please contact the Education Department.