TL14: Sample Size and Subgroup Analyses
*Hope Knuckles, Abbott Keywords: Diagnostic, sample size, subgroup For diagnostic clinical trials, subgroups are often unknown entities. In some recent publications, subgroups have been found to have very different diagnostic characteristics - such as different cutoffs, different means, different risk factors. This roundtable will be an idea exchange about powering the subgroup and/or other methods for calculating sample size and considering subgroup analyses. This is especially difficult when powering studies for each subgroup could be difficult due to rare conditions or difficulty in obtaining consent for patients with acute illness or emergency care is needed.
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Key Dates
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November 1 - December 17, 2013
Online proposal submission for a session, short course and Town Hall Open -
January 6 - March 11, 2014
Online proposal submission for Roundtables Open -
April 30 - May 28, 2014
Abstract Submission Open -
June 4, 2014
Online Registration Opens -
August 8 - August 22, 2014
Invited Abstract Editing -
August 11, 2014
Short Course materials due from Instructors -
September 1, 2014
Housing Deadline -
September 15, 2014
Cancellation Deadline and Registration Closes @ 11:59 pm EDT -
September 22 - September 24, 2014
Marriott Wardman Park, Washington, DC