How Loneliness and Sleep Timing Are Linked to Depression Symptoms

A survey of 1,079 Chinese college students found a significant positive correlation between loneliness and depressive symptoms (r = 0.549, p < 0.01).

• Loneliness is positively associated with depressive symptoms.
• Sleep chronotype is negatively correlated with both loneliness (r = -0.177, p < 0.01) and depressive symptoms (r = -0.206, p < 0.01).
• Sleep chronotype partially mediates the relationship between loneliness and depressive symptoms, with a significant indirect effect (β = 0.016, 95% CI: 0.003-0.035, p = 0.013).
• Students with higher loneliness scores tend to have an evening-type sleep pattern, which may worsen depressive symptoms.

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