Differences Between Online Trial Participants Who Have Used Statutory Mental Health Services and Those Who Have Not: Analysis of Baseline Data From 2 Pragmatic Trials of a Digital Health Intervention

Stefan Rennick-Egglestone   ^{1 *} , PhD ;   Chris Newby   ^{2 *} , PhD ;   Clare Robinson   ³ , PhD ;   Caroline Yeo   ¹ , PhD ;   Fiona Ng   ¹ , PhD ;   Rachel A Elliott   ⁴ , PhD ;   Yasmin Ali   ¹ , MSc ;   Joy Llewellyn-Beardsley   ¹ , MA ;   Scott Pomberth   ⁵ ;   Julian Harrison   ⁵ , MA ;   Sean P Gavan   ⁴ , PhD ;   Pim Cuijpers   ⁶ , PhD ;   Stefan Priebe   ⁷ , PhD ;   Charlotte L Hall   ⁸ , PhD ;   Mike Slade   ¹ , PhD

¹ School of Health Sciences, Institute of Mental Health, University of Nottingham, Nottingham, United Kingdom

² School of Medicine, Institute of Mental Health, University of Nottingham, Nottingham, United Kingdom

³ Centre for Evaluation and Methods, Pragmatic Clinical Trials Unit, Queen Mary University of London, London, United Kingdom

⁴ Division of Population Health, Health Services Research & Primary Care, University of Manchester, Manchester, United Kingdom

⁵ Narrative Experiences Online study Lived Experience Advisory Panel, Nottingham, United Kingdom

⁶ Department of Clinical, Neuro and Developmental Psychology, Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands

⁷ Unit for Social and Community Psychiatry (WHO Collaborating Centre for Mental Health Service Development), Queen Mary University of London, London, United Kingdom

⁸ National Institute for Health Research MindTech-MedTech Co-operative, Mental Health & Clinical Neurosciences, School of Medicine, Institute of Mental Health, University of Nottingham, Nottingham, United Kingdom, Nottingham, United Kingdom

*these authors contributed equally