What question did this study set out to answer?

The aim is to explore the relationship between post-traumatic stress symptoms and depressive symptoms during the pandemic.

February 2, 2026

Comorbidity network of post-traumatic stress and depressive symptom during the pandemic in South Korea.

Key Points

The aim is to explore the relationship between post-traumatic stress symptoms and depressive symptoms during the pandemic.
Analysis of network structures of psychological symptoms during different phases of the pandemic
Assessment of symptom relationships and their changes over time
Sleep problems consistently served as a bridging symptom between PTSS and depressive symptoms
Network structures showed variation across pandemic phases, but sleep-related symptoms remained a stable element
Implying the importance of sleep issues in understanding PTSS-depression comorbidity

Abstract

We found evidence of changes in the network structure of PTSS and depressive symptoms, even as sleep problems retained a consistent role as a bridging symptom. Although overall network structures varied across phases of the pandemic, the bridging role of sleep-related symptoms remained consistently strong, suggesting that sleep problems may represent a general and enduring mechanism underlying PTSS-depression comorbidity. During future pandemics, prompt screening for sleep problems may help prevent the development of comorbidity between PTSS and depressive symptoms.

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