Journal of Shanghai Jiao Tong University (Medical Science) >

2024 , Vol. 44 >Issue 3: 358 - 364

DOI: https://doi.org/10.3969/j.issn.1674-8115.2024.03.008

Public health

Relationship of screen time and dietary behaviors with depressive symptoms in junior high school students in five provinces in China

  • Ruijun YANG ,
  • Shuhong Lü ,
  • Zhiye LIU ,
  • Xin ZHANG ,
  • Zhihao LIU
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  • 1.Department of Ophthalmology, The Third Hospital of Mianyang, Sichuan Province/Sichuan Province Mental Health Center, Mianyang 621000, China
    2.Department of Health Promotion, Chinese Center for Health Education, Beijing 100011, China
    3.Department of Health Management, The Second People′s Hospital of Liaocheng, Shandong Province Liaocheng 252600, China
    4.Department of Health Education, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
LIU Zhihao, E-mail: 37894479@qq.com.

Received date: 2023-09-21

  Accepted date: 2024-01-04

  Online published: 2024-03-28

Supported by

Financial Project of National Health and Family Planning Commission(1710908)

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Abstract

Objective ·To explore the relationship of screen time and dietary behaviors with depressive symptoms in junior high school students in 5 provinces in China. Methods ·A total of 1 067 junior high school students were selected from Zhejiang and Guangdong in the eastern region, Jiangxi in the central region, Sichuan and Guizhou in the western region of China by using stratified random cluster sampling method for a questionnaire survey, which included general demographic characteristics, health behaviors, diatery behaviors, and depressive symptoms. Univariate analysis was used to analyze the report rates of depressive symptoms, daily screen time and dietary behaviors of the students with variant demographic characteristics, and Logistic regression analysis was used to analyze the relationship of daily screen time and dietary behaviors with depressive symptoms and the interaction effects as well. Results ·The report rate of depressive symptoms was 12.9% in the junior high school students in 5 provinces. The students who were in the western region, were not only children, had a weekly allowance of over 100 yuan, had smoked or consumed alcohol, had daily screen time≥2 h, or had unhealthy dietary behaviors, had higher reporting rates of depressive symptoms (P<0.05). A total of 15.2% students had daily screen time≥2 h, who had a higher reporting rate of depressive symptoms than the others after the confounding factors being adjusted (OR=1.89, 95%CI 1.22?2.95). A total of 29.5% of students had unhealthy dietary behaviors, who had a higher reporting rate of depressive symptoms than the others after the confounding factors being adjusted (OR=2.16, 95%CI 1.47?3.19). A total of 6.4% of students had both daily screen time≥2 h and unhealthy dietary behaviors, who had a higher reporting rate of depressive symptoms than the students having daily screen time<2 h and healthy dietary behaviors after the confounding factors being adjusted (OR=4.26, 95%CI 2.24?7.56). After adjusting for the confounding factors, the analysis of the interaction between daily screen time and dietary behaviors showed an additive interaction with the relative excess risk due to interaction (RERI) of 1.21 (95%CI 1.02?1.51), the attributable proportion due to interaction (AP) of 0.19 (95%CI 0.13?0.31), and the synergy index (S) of 1.35 (95%CI 1.12?1.69). Conclusion ·The junior high school students with both long screen time and unhealthy dietary behaviors are more likely to suffer from depressive symptoms in China; long screen time and unhealthy dietary behaviors have an additive interactive effect on depressive symptoms.

Key words： middle school student; screen time; dietary behavior; depressive symptom

Cite this article

Ruijun YANG , Shuhong Lü , Zhiye LIU , Xin ZHANG , Zhihao LIU . Relationship of screen time and dietary behaviors with depressive symptoms in junior high school students in five provinces in China[J]. Journal of Shanghai Jiao Tong University (Medical Science), 2024 , 44(3) : 358 -364 . DOI: 10.3969/j.issn.1674-8115.2024.03.008

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