What question did this study set out to answer?

To explore the interaction mechanisms of PTSD and depression symptoms at a symptom level among college students.

Network structure analysis of post-traumatic stress and depressive symptoms among college students: identification of central and bridge symptoms

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Cross-sectional survey identifies key symptoms connecting PTSD and depression among college students, indicating new intervention targets.

To explore the interaction mechanisms of PTSD and depression symptoms at a symptom level among college students.
Cross-sectional survey conducted among 501 college students using IES-R and PHQ-9
Network analysis performed using Gaussian Graphical Model combined with graphical LASSO
Identified central and bridge symptoms using Expected Influence and Bridge Expected Influence measures.
Central symptoms identified included H2 (nervousness/exaggerated startle response, EI = 1.38), I4 (involuntary recall, EI = 1.33), and H4 (difficulty concentrating, EI = 1.09)
Bridge symptoms included I8 (trauma-related dreams, Bridge EI = 0.88), H1 (irritability, Bridge EI = 0.85), and I7 (intense emotional fluctuations, Bridge EI = 0.80)
Network stability demonstrated with a CS-coefficient of 0.75.

Yan et al. (2026) studied this question.

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Cross-sectional survey identifies key symptoms connecting PTSD and depression among college students, indicating new intervention targets.