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KMID : 0897520190240020048
Journal of Korean Association of Social Psychiatry
2019 Volume.24 No. 2 p.48 ~ p.57
Relationship between Smartphone Use Time, Depression and Suicide in Adolescents
Kang Je-Wook

Abstract
Objectives : The purpose of this study was to investigate the effects of smartphone dependence on adolescent depression and suicide.

Methods : Data from 54,603 people were finally analyzed using raw data from 'the 13th Korea Youth Risk Behavior Web-based Survey (KYRBWS)' conducted in 2017. In order to evaluate psychosocial factors, depression, suicidal idea, planning and attempts were used as the main variables. The characteristics of each smartphone were analyzed by dividing smartphone usage time into weekdays and weekends.

Results : Adolescents who used smartphones for 300 minutes or more during the week showed 1.56 times higher risk of depression (OR=1.56 ; 95% CI, 1.43-1.71 ; p<0.01) than those who used less than 60 minutes. Incidents of suicide idea were also significantly higher (OR=1.23 ; 95% CI, 1.08-1.39 ; p<0.01). In the case of weekend smartphone use, the risk of depression increased by 1.41 times (OR=1.41 ; 95% CI, 1.30-1.53 ; p<0.01). Incidents of suicide idea were also significantly higher (OR=1.16 ; 95% CI, 1.03-1.31 ; p=0.02). On the other hand, adolescents who used 120-180 minutes on weekdays, had a lower risk of suicide planning (OR=0.84 ; 95% CI, 0.70-1.00 ; p=0.05). Also, risk of suicide idea was also lower when using the weekend for 240-300 minutes (OR=0.87 ; 95% CI, 0.78-0.98 ; p=0.02).

Conclusion : This study provide mixed results between smartphone use time and mental health problem. This findings can offer better understanding and providing guideline to adolescent with using smartphone.
KEYWORD
Smartphone dependence, Smartphone usage time, Adolescent, Sepression, Suicide
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