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. 2016 Nov 9;6(11):e011533.
doi: 10.1136/bmjopen-2016-011533.

Impact of screen time on mental health problems progression in youth: a 1-year follow-up study

Xiaoyan Wu  1   2 , Shuman Tao  1 , Shichen Zhang  1   2 , Yukun Zhang  1 , Kaihua Chen  3 , Yajuan Yang  4 , Jiahu Hao  1   2 , Fangbiao Tao  1   2
Affiliations

Impact of screen time on mental health problems progression in youth: a 1-year follow-up study

Xiaoyan Wu et al. BMJ Open. .

Abstract

Objectives: We examined the relationships between screen time (ST) and mental health problems and also increment of ST and progression of mental health problems in a college-based sample of Chinese youth.

Methods: We assessed 2521 Chinese college freshmen from October 2013 to December 2014. At baseline, the mean age of participants was 18.43 years (SD 0.96 years), and 1215 (48.2%) participants reported ST >2 h/day. We estimated multivariable-adjusted ORs by using logistic regression models for the risk of developing mental health problems (anxiety, depression and psychopathological symptoms) and/or progression of these problems, according to baseline ST exposure and changes in exposure at follow-up.

Results: At baseline, when ST >2 h/day was compared with ST ≤2 h/day, the OR was 1.38 (95% CI 1.15 to 1.65) for anxiety, 1.55 (95% CI 1.25 to 1.93) for depression and 1.49 (95% CI 1.22 to 1.83) for psychopathological symptoms. The results remained unchanged for depressive and psychopathological symptoms but not for anxiety, after additional adjustment for sex, age, residential background, body mass index, perceived family economy, sleep quality, smoking, alcohol intake, exercise after school and physical activity. When participants who had increased their ST exposure to >2 h/day were compared with those with no change and ST ≤2 h/day, the OR was 1.78 (95% CI 1.12 to 2.83) for anxiety, 1.92 (95% CI 1.23 to 2.83) for depression and 1.93 (95% CI 1.16 to 3.21) for psychopathological symptoms. These associations also remained after additional adjustment.

Conclusions: The overall effects are consistent yet small for ST/ST increment on mental health problems and its progression. Given the small effect size of the current results, it remains unclear the degree to which ST is a practically significant risk factor for mental health outcomes. Future studies of high quality are necessary to further examine this association and the direction of causality.

Keywords: College students; MENTAL HEALTH; screen time.

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Conflict of interest statement

Conflicts of Interest: None declared.

Figures

Figure 1
Figure 1
Flow chart of study participants.
See this image and copyright information in PMC

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