Published on in Vol 9, No 4 (2021): April
![Relationship Between Major Depression Symptom Severity and Sleep Collected Using a Wristband Wearable Device: Multicenter Longitudinal Observational Study Relationship Between Major Depression Symptom Severity and Sleep Collected Using a Wristband Wearable Device: Multicenter Longitudinal Observational Study](https://asset.jmir.pub/assets/dc75226f5ec31d024ee375aa18f96d69.png 480w,https://asset.jmir.pub/assets/dc75226f5ec31d024ee375aa18f96d69.png 960w,https://asset.jmir.pub/assets/dc75226f5ec31d024ee375aa18f96d69.png 1920w,https://asset.jmir.pub/assets/dc75226f5ec31d024ee375aa18f96d69.png 2500w)
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 South London and Maudsley National Health Services Foundation Trust, London, United Kingdom
4 Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
5 Department of Psychiatry, Amsterdam Public Health Research Institute and Amsterdam Neuroscience, Amsterdam University Medical Centre, Vrije Universiteit and GGZ inGeest, Amsterdam, Netherlands
6 Teaching Research and Innovation Unit, Parc Sanitari Sant Joan de Déu, Fundació Sant Joan de Déu, Barcelona, Spain
7 Centro de Investigación Biomédica en Red de Salud Mental, Madrid, Spain
8 Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
9 Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
10 Center for Contextual Psychiatry, Department of Neurosciences, Katholieke Universiteit Leuven, Leuven, Belgium
11 Faculty of Social Services and Health Care, LAB University of Applied Sciences, Lahti, Finland
12 Janssen Research and Development LLC, Titusville, NJ, United States
13 see Acknowledgments, London, United Kingdom