This is the program for the 2010 Joint Statistical Meetings in Vancouver, British Columbia.
Abstract Details
Activity Number:
|
186
|
Type:
|
Contributed
|
Date/Time:
|
Monday, August 2, 2010 : 10:30 AM to 12:20 PM
|
Sponsor:
|
Section on Survey Research Methods
|
Abstract - #308731 |
Title:
|
Incorporating Sampling Designs Into a Grade of Membership (GoM) Model
|
Author(s):
|
Marnie Bertolet*+
|
Companies:
|
University of Pittsburgh
|
Address:
|
Epidemiology Data Center, Pittsburgh, PA, 15261,
|
Keywords:
|
Sampling Weights ;
Grade of Membership Model ;
Bayesian Mixed-Membership
|
Abstract:
|
The Grade of Membership (GoM) model is a heirarchical Bayesian mixed-membership model used recently to analyze latent class disability profiles in the National Long Term Care Survey (NLTCS). Survey data often includes complexities such as informative sampling and dependencies induced by clustering. Two modifications of the GoM model are introduced to incorporate these complexities. The first changes the Dirichlet prior to a polytomous logistic mixed-effects prior to model the stratification and clustering in the sampling design. The second adds probability weights using a method called Weighting based on the Estimated Parameter, or wEP. To demonstrate the effectiveness of these modifications, we use simulated data to compare the Dirichlet prior to the mixed-effects and then apply the method to the NLTCS data.
|
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.