The associations between screen time-based sedentary behavior and depression: a systematic review and meta-analysis

Area of Science:

• Public Health
• Mental Health Research
• Behavioral Science

Background:

• Depression is a significant global public health concern.
• Increased computer and TV use in the 21st century contributes to sedentary behavior.
• Understanding the link between screen time-based sedentary behavior (ST-SB) and depression is crucial for developing effective interventions.

Purpose of the Study:

• To investigate the association between screen time-based sedentary behavior (ST-SB) and depression risk.
• To conduct a meta-analysis of existing studies to quantify this relationship.

Main Methods:

• A systematic search of Medline, Embase, and Cochrane Library databases was performed.
• Meta-analysis using odds ratios (OR) and 95% confidence intervals (CIs) was employed.
• Subgroup analyses were conducted based on age, gender, and different screen time reference categories.

Main Results:

• The meta-analysis included 19 studies (12 cross-sectional, 7 longitudinal).
• Overall, higher ST-SB was significantly associated with an increased risk of depression (pooled OR = 1.28).
• The association was significant in females (OR = 1.18) but not in males. Risk varied based on the reference category used for screen time.

Conclusions:

• ST-SB is associated with an elevated risk of depression, with variations across different populations.
• The findings underscore the importance of addressing ST-SB in public health strategies for depression prevention.
• Future research should focus on developing valid objective measures for assessing sedentary behavior.