User Engagement and Attrition in an App-Based Physical Activity Intervention: Secondary Analysis of a Randomized Controlled Trial.
Sarah Martine EdneyJillian C RyanTimothy OldsCourtney M MonroeFrançois FraysseCorneel Vandelanotte PhDRonald C PlotnikoffRachel Grace CurtisCarol Ann MaherPublished in: Journal of medical Internet research (2019)
Australian New Zealand Clinical Trials Registry ACTRN12617000113358; https://www.anzctr.org.au/ACTRN12617000113358.aspx.