Longitudinal Relationships Between Depressive Symptom Severity and Phone-Measured Mobility: Dynamic Structural Equation Modeling Study

Yuezhou Zhang   ¹ , MSc ;   Amos A Folarin   ^{1, 2, 3, 4, 5} , PhD ;   Shaoxiong Sun   ¹ , PhD ;   Nicholas Cummins   ¹ , PhD ;   Srinivasan Vairavan   ⁶ , PhD ;   Rebecca Bendayan   ^{1, 3} , PhD ;   Yatharth Ranjan   ¹ , MSc ;   Zulqarnain Rashid   ¹ , PhD ;   Pauline Conde   ¹ , BSc ;   Callum Stewart   ¹ , MSc ;   Petroula Laiou   ¹ , PhD ;   Heet Sankesara   ¹ , BSc ;   Faith Matcham   ⁷ , PhD ;   Katie M White   ⁷ , BSc ;   Carolin Oetzmann   ⁷ , MSc ;   Alina Ivan   ⁷ , MSc ;   Femke Lamers   ⁸ , PhD ;   Sara Siddi   ^{9, 10, 11} , PhD ;   Elisabet Vilella   ^{10, 12} , PhD ;   Sara Simblett   ¹³ , PhD ;   Aki Rintala   ^{14, 15} , PhD ;   Stuart Bruce   ¹⁶ , PGDip ;   David C Mohr   ¹⁷ , PhD ;   Inez Myin-Germeys   ¹⁴ , PhD ;   Til Wykes   ^{13, 18} , PhD ;   Josep Maria Haro   ^{9, 10, 11} , MD ;   Brenda WJH Penninx   ⁸ , PhD ;   Vaibhav A Narayan   ⁶ , PhD ;   Peter Annas   ¹⁹ , PhD ;   Matthew Hotopf   ^{3, 7, 18} , PhD ;   Richard JB Dobson   ^{1, 2, 3, 4, 5} , PhD ;   RADAR-CNS consortium   ²⁰

¹ Department of Biostatistics & Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom

² Institute of Health Informatics, University College London, London, United Kingdom

³ NIHR Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King's College London, London, United Kingdom

⁴ Health Data Research UK London, University College London, London, United Kingdom

⁵ NIHR Biomedical Research Centre at University College London Hospitals NHS Foundation Trust, London, United Kingdom

⁶ Janssen Research and Development LLC, Titusville, NJ, United States

⁷ Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom

⁸ Department of Psychiatry, Amsterdam Public Health Research Institute and Amsterdam Neuroscience, Amsterdam University Medical Centre, Vrije Universiteit and GGZ inGeest, Amsterdam, Netherlands

⁹ Teaching Research and Innovation Unit, Parc Sanitari Sant Joan de Déu, Fundació Sant Joan de Déu, Barcelona, Spain

¹⁰ Centro de Investigación Biomédica en Red de Salud Mental, Madrid, Spain

¹¹ Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain

¹² Hospital Universitari Institut Pere Mata, Institute of Health Research Pere Virgili, Universitat Rovira i Virgili, Reus, Spain

¹³ Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom

¹⁴ Center for Contextual Psychiatry, Department of Neurosciences, Katholieke Universiteit Leuven, Leuven, Belgium

¹⁵ Faculty of Social Services and Health Care, LAB University of Applied Sciences, Lahti, Finland

¹⁶ RADAR-CNS Patient Advisory Board, King's College London, London, United Kingdom

¹⁷ Center for Behavioral Intervention Technologies, Department of Preventive Medicine, Northwestern University, Evanston, IL, United States

¹⁸ South London and Maudsley NHS Foundation Trust, London, United Kingdom

¹⁹ H. Lundbeck A/S, Copenhagen, Denmark

²⁰ The RADAR-CNS Consortium, London, United Kingdom