Smartphone Screen Time Characteristics in People With Suicidal Thoughts: Retrospective Observational Data Analysis Study

Marta Karas   ¹ , PhD ;   Debbie Huang   ¹ , PhD ;   Zachary Clement   ¹ , MS ;   Alexander J Millner   ² , PhD ;   Evan M Kleiman   ³ , PhD ;   Kate H Bentley   ^{2, 4, 5, 6} , PhD ;   Kelly L Zuromski   ^{2, 7} , PhD ;   Rebecca G Fortgang   ^{2, 4, 5, 6} , PhD ;   Dylan DeMarco   ² , BA ;   Adam Haim   ⁸ , PhD ;   Abigail Donovan   ^{4, 5} , MD ;   Ralph J Buonopane   ^{5, 7} , PhD ;   Suzanne A Bird   ^{4, 5} , MD ;   Jordan W Smoller   ^{4, 5, 6, 9, 10} , MD ;   Matthew K Nock   ^{2, 5, 7} , PhD ;   Jukka-Pekka Onnela   ¹ , PhD

¹ Department of Biostatistics, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, United States

² Department of Psychology, Harvard University, Cambridge, MA, United States

³ Department of Psychology, Rutgers University, Piscataway, NJ, United States

⁴ Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States

⁵ Department of Psychiatry, Harvard Medical School, Boston, MA, United States

⁶ Center for Precision Psychiatry, Massachusetts General Hospital, Boston, MA, United States

⁷ Franciscan Children's, Mental Health Research, Brighton, MA, United States

⁸ National Institute of Mental Health, Bethesda, MD, United States

⁹ Psychiatric and Neurodevelopmental Genetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, United States

¹⁰ Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Boston, MA, United States