Abstract #301411

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 2002 Program page
JSM 2002 Abstract #301411
Activity Number: 320
Type: Contributed
Date/Time: Wednesday, August 14, 2002 : 10:30 AM to 12:20 PM
Sponsor: Biopharmaceutical Section*
Abstract - #301411
Title: On Test-based Exact Confidence Intervals for the Difference of Two Independent Proportions
Author(s): David Li*+ and Devan Mehrotra and William Wang and Ivan Chan
Affiliation(s): Merck Research Laboratories and Merck Research Laboratories and Merck Research Laboratories and Merck Research Laboratories
Address: , , , ,
Keywords: exact test ; test-bases confidence interval ; 2 by 2 table
Abstract:

In this paper, we consider test-based exact confidence intervals for the difference of two independent binomial proportions. Following Agresti and Min (2001) and Chen (2002), we construct the confidence interval by inverting a two-sided exact test. We investigate alternative test statistics, including one based on the tail probabilities of observed outcomes, where the tail is defined as the set of outcomes which occur with a less probability than the observed outcome. The exact confidence intervals derived from the alternative statistics are compared with existing ones in terms of coverage and length. Numerical examples are provided for illustration.

  • 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 2002 program

JSM 2002

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 2002