Opportunities and challenges of delivering digital clinical trials : lessons learned from a randomised controlled trial of an online behavioural intervention for children and young people
Background: Despite being the gold standard of research to determine effectiveness, randomised controlled trials (RCTs) often struggle with participant recruitment, engagement and retention. These issues may be exacerbated when recruiting vulnerable populations, such as participants with mental health issues. We aimed to update understanding of the scope of these problems in trials of health techn