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J. Pediatr. Psychol. (2012) 37 (9): 1023-1030.
The Suicidal Feelings, Self-Injury, and Mobile Phone Use After Lights Out in Adolescents
Lunes 8 de octubre de 2012 · 1158 lecturas
The Suicidal Feelings, Self-Injury, and Mobile Phone Use After Lights Out in Adolescents
Norihito Oshima, MD1,
Atsushi Nishida, PhD2,
Shinji Shimodera, MD, PhD3,
Mamoru Tochigi, MD, PhD4,
Shuntaro Ando, MD, PhD2,4,
Syudo Yamasaki, PhD2,
Yuji Okazaki, MD5 and
Tsukasa Sasaki, MD, PhD1,6
+ Author Affiliations
1Office for Mental Health Support, Division for Counseling and Support, The University of Tokyo, 2Department of Psychiatry & Behavioral Science, Tokyo Metropolitan Institute of Medical Science, 3Department of Neuropsychiatry, Kochi Medical School, Kochi University, 4Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, 5Tokyo Metropolitan Matsuzawa Hospital, and 6Laboratory of Health Education, Graduate School of Education, The University of Tokyo
All correspondence concerning this article should be addressed to Shinji Shimodera, Department of Neuropsychiatry, Kochi Medical School, Kohasu, Okoh-cho, Nankoku-shi, Kochi, 783-8505, Japan. E-mail: shimodes@kochi-u.ac.jp
Received October 4, 2011.
Revision received April 26, 2012.
Accepted May 3, 2012.
Abstract
Objective To study association between nocturnal mobile phone use and mental health, suicidal feelings, and self-injury in adolescents. Methods Associations of mobile phone use after lights out with mental health, suicidal feelings, and self-injury were cross-sectionally examined in 17,920 adolescents using a self-report questionnaire. A series of logistic regression analyses were separately conducted for early (grades 7-9) and late (grades 10-12) adolescents. Results Sleep length was significantly associated with the mobile phone use only in early adolescents. Logistic regression showed significant associations of the nocturnal mobile phone use with poor mental health, suicidal feelings, and self-injury after controlling for sleep length and other confounders. Conclusions Mobile phone use after lights out may be associated with poor mental health, suicidal feelings, and self-injury in both early and late adolescents. Association between reduced sleep and the mobile phone use was confined to early adolescents.
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