JSM 2011 Online Program

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Abstract Details

Activity Number: 116
Type: Topic Contributed
Date/Time: Monday, August 1, 2011 : 8:30 AM to 10:20 AM
Sponsor: Biopharmaceutical Section
Abstract - #301358
Title: Noninferiority Tests for Binomial Endpoints in Two-Arm Medical Device Trials
Author(s): Maria Carola Alfaro*+ and Edmund McMullen
Companies: Boston Scientific Corporation and Boston Scientific Corporation
Address: 4100 Hamline Avenue North, Saint Paul, MN, 55112-5798,
Keywords: Non-inferiority ; binomial ; sample size ; type I error ; power
Abstract:

Non-inferiority testing is performed in trials that intend to show that the new device is not inferior to the standard device. A non-inferiority test can be done on binomial and continuous endpoints. Our focus will be non-inferiority tests for the difference of binomial primary endpoints rates in two-sample trials. In this scenario a non-inferiority test is a one-sided test based on the binomial distribution. This test has impact on the sample size, type I error, power and non-inferiority margin of the trial in the design stage, and the conclusion of this test is based on the calculated one-sided p-value of the primary endpoint data. Through real case examples, we will analyze the impact of using different non-inferiority tests in the design stage and on the primary endpoint data through a comparison of estimations of sample size, type I error, power, non-inferiority margin and p-values.


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