Nonpublication Rates and Characteristics of Registered Randomized Clinical Trials in Digital Health: Cross-Sectional Analysis

Mustafa Al-Durra   ^{1, 2 *} , BSc, MSc ;   Robert P Nolan   ^{3, 4 *} , PhD, C.Psych ;   Emily Seto   ^{1, 5 *} , PEng, PhD ;   Joseph A Cafazzo   ^{1, 2, 6 *} , PEng, PhD ;   Gunther Eysenbach   ^{1, 2 *} , MD, MPH, FACMI

¹ Centre for Global eHealth Innovation, Techna Institute, University Health Network, Toronto, ON, Canada

² Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada

³ Cardiac eHealth and Behavioral Cardiology Research Unit, Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada

⁴ Department of Psychology, University of York, Toronto, ON, Canada

⁵ Institute of Health Policy, Management, and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada

⁶ Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada

*all authors contributed equally