Abstract #300645

This is the preliminary program for the 2003 Joint Statistical Meetings in San Francisco, California. Currently included in this program is the "technical" program, schedule of invited, topic contributed, regular contributed and poster sessions; Continuing Education courses (August 2-5, 2003); and Committee and Business Meetings. This on-line program will be updated frequently to reflect the most current revisions.

To View the Program:
You may choose to view all activities of the program or just parts of it at any one time. All activities are arranged by date and time.

The views expressed here are those of the individual authors
and not necessarily those of the ASA or its board, officers, or staff.

Back to main JSM 2003 Program page
JSM 2003 Abstract #300645
Activity Number: 413
Type: Contributed
Date/Time: Wednesday, August 6, 2003 : 2:00 PM to 3:50 PM
Sponsor: Section on Survey Research Methods
Abstract - #300645
Title: Comparing the Areas under Receiver Operating Characteristic Curves for Complex Survey Designs
Author(s): William W. Davis*+
Companies: National Institutes of Health
Address: 5114 Viking Rd., Bethesda, MD, 20814-5711,
Keywords: cluster sample ; mixed model ; jackknife ; balanced repeated replication
Abstract:

The receiver operating characteristic (ROC) curve may be used to evaluate the performance of a new diagnostic test relative to a standard diagnostic test. We provide a model-based approach to test whether the difference between two ROC curves is statistically significant when individuals are selected from a cluster sample design with unequal selection probabilities. The variance of the difference is expressed in terms of parameters of a mixed-model, which include parameters measuring the between- and within-cluster variation in both measurements. The model-based procedure offers an exact test under the model assumptions. The procedure is applied to detecting undiagnosed diabetes using data from the third National Health and Nutrition Examination Survey. For this example, the method is shown to yield similar conclusions to the approximate tests that utilize replication methods. Modeling the two diagnostic measurements yields insight that is not captured by the hypothesis test.

  • 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 2003 program

JSM 2003 For information, contact meetings@amstat.org or phone (703) 684-1221. If you have questions about the Continuing Education program, please contact the Education Department.
Revised March 2003