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The relationship between chronotype, insomnia and depressive symptoms in Chinese male prisoners
How Sleep Timing, Insomnia, and Depression Are Linked in Chinese Male Prisoners
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Abstract
The prevalence of morning type (MT), neutral type (NT), and evening type (ET) among male prisoners was 47.2%, 46.7%, and 6.1%, respectively.
- Being an evening type is significantly associated with younger age and higher levels of and depression.
- The risk of depression is nearly three times higher for evening types compared to morning types.
- Insomnia partially mediates the relationship between and depression.
- The direct effect of chronotype on depression is significant, accounting for 50.51% of the total effect.
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Key numbers
2.970Γ
Relative Risk of Depression Increase
Risk of depression for evening types compared to morning types.
6.1%
Prevalence of Evening
Proportion of male prisoners classified as evening type.
41.8%
Incidence of Clinically Significant Depression
Percentage of evening types reporting significant .