PhD

Efficacy of Contextually Tailored Suggestions for Physical Activity: A Micro-Randomized Optimization Trial of HeartSteps

BACKGROUND: HeartSteps is an mHealth intervention that encourages regular walking via activity suggestions tailored to the …

Predrag Klasnja, Shawna Smith, Nicholas J. Seewald, Andy Lee, Kelly Hall, Brook Luers, Eric B. Hekler, Susan A. Murphy
Cite DOI PubMed Project
Sample size considerations for the analysis of continuous repeated-measures outcomes in sequential multiple-assignment randomized trials
A poster presented at the 2017 Michigan Student Symposium for Interdisciplinary Statistical Sciences. Winner, Best Departmental Poster (Statistics).
Mar 24, 2017 12:00 PM — 1:00 PM University of Michigan, Ann Arbor, MI, USA
Nicholas J. Seewald, Inbal Nahum-Shani, James R. McKay, Daniel Almirall
Poster Project
Sample size considerations for the analysis of continuous repeated-measures outcomes in sequential multiple-assignment randomized trials
MRT-SS Calculator: An R Shiny Application for Sample Size Calculation in Micro-Randomized Trials
The micro-randomized trial (MRT) is a new experimental design which allows for the investigation of the proximal effects of a …
Nicholas J. Seewald, Ji Sun, Peng Liao
Cite DOI PDF Project