Avoidance symptoms emerge as central links in high-risk pregnancy mental health networks

Women with high-risk pregnancies frequently face mental health difficulties, disturbed sleep, and symptoms of post-traumatic stress, yet how these problems interconnect at the level of individual symptoms has remained poorly mapped. A new cross-sectional study published in BMC Psychiatry applies network analysis to these overlapping burdens, aiming to identify which symptoms are most central and which act as bridges between conditions. The research was conducted on 270 women with high-risk pregnancies, a population in which such co-occurring difficulties are common and clinically consequential.

The researchers assessed depressive symptoms with the Edinburgh Postnatal Depression Scale, anxiety symptoms with the Generalized Anxiety Disorder-7 Item Scale, sleep quality with the Pittsburgh Sleep Quality Index, and post-traumatic stress symptoms with the Posttraumatic Stress Disorder Checklist-Civilian Version. Rather than treating each questionnaire as a single score, the team used network analysis methods to construct a concurrent network in which individual symptoms appear as nodes and the statistical associations between them as edges. This approach allowed the investigators to identify core symptoms within the network and bridging symptoms that connect different symptom domains.

The analysis revealed that in both models examined, the strongest estimated edge connected two avoidance items from the post-traumatic stress measure: the tendency to try to avoid thoughts and feelings that remind a woman of the stressful experience, and making an effort to avoid conversations, people, places, and activities that serve as reminders. That this pairing carried the largest estimated weight in both model specifications suggests that avoidance-related symptoms form a tightly linked cluster within the overall symptom structure of this population.

The study also points to hyperarousal-related symptoms as potentially playing an important bridging role, linking post-traumatic stress symptoms with depressive symptoms, anxiety symptoms, and sleep problems. However, the specific highest-ranked bridge node varied depending on the model specification used, indicating some sensitivity of that result to analytical choices. In contrast, the avoidance item concerning efforts to avoid conversations, people, places, and activities appeared more consistently prominent across both the primary and sensitivity analyses, making it the more stable candidate for a central connecting role.

The authors emphasize the exploratory nature of these findings. The study examined the conditional association structure among depressive symptoms, anxiety symptoms, sleep problems, and post-traumatic stress symptoms in women with high-risk pregnancies, providing information about how these symptoms relate to one another at a single point in time. Because the design is cross-sectional, the network edges reflect concurrent associations rather than causal relationships, and no conclusions about the development or treatment of these symptoms can be drawn directly from the data.

Within those limits, the work offers a detailed picture of symptom interconnectivity that could inform the design of future intervention studies.

Subject of Research: Symptom network analysis of mental health, sleep problems, and post-traumatic stress symptoms in high-risk pregnancy

Article Title: Symptom network analysis of mental health, sleep problems, and post-traumatic stress symptoms in women with high-risk pregnancy

Article References: Xiao, L.-R., Qi, X.-C., Pan, X.-M., Lin, L.-H., Liu, X.-T., Zhang, M.-R., Tao, T., Chen, M.-M., Huang, S.-T., & Weng, X.-L. (2026). Symptom network analysis of mental health, sleep problems, and post-traumatic stress symptoms in women with high-risk pregnancy. BMC Psychiatry. https://doi.org/10.1186/s12888-026-08764-w

Image Credits: AI Generated

DOI: 10.1186/s12888-026-08764-w

Keywords: high-risk pregnancy, network analysis, post-traumatic stress symptoms, depression, anxiety, sleep problems, avoidance symptoms, hyperarousal, cross-sectional study, BMC Psychiatry, mental health, EPDS