Conference Program Home
  My Program

All Times EDT

Abstract Details

Activity Number: 241 - SPEED: Statistics in Social Sciences and Survey Research Part 1
Type: Contributed
Date/Time: Tuesday, August 9, 2022 : 8:30 AM to 10:20 AM
Sponsor: ENAR
Abstract #323078
Title: Examining the Effects of Contamination Due to School Mobility on Efficacy of Stepped Wedge Designs
Author(s): Meredith McCormack-Mager* and Abigail Shoben
Companies: The Ohio State University and The Ohio State University
Keywords: stepped wedge; cluster randomized trials; trial design; education; randomized controlled trials; contamination
Abstract:

School mobility, the proportion of non-promotional school changes among students, can reach over 60% in US schools, but little research has been done into how this mobility affects interventional research in schools. This contribution examines how contamination caused by student transfer between schools under intervention and control can affect stepped-wedge cluster randomized trials. The stepped-wedge design employs randomized, sequential roll-out of the studied intervention and all participating clusters ultimately receive the intervention, making stepped-wedge a common trial design choice for educational settings. Simulation studies were used to assess the impacts of changes in mobility rate on power and Type I error. Additional changes to school and district size, ICC, and study length were employed to assess how altering study design may protect against power loss due to contamination.


Authors who are presenting talks have a * after their name.

Back to the full JSM 2022 program