Network analysis applied to post-concussion symptoms in two mild traumatic brain injury samples

Area of Science:

• Neuroscience
• Psychology
• Rehabilitation Medicine

Background:

• Post-concussion symptoms following mild traumatic brain injury (mTBI) are complex and not fully explained by latent disease models.
• Network analysis offers a novel approach to understanding the interrelationships between various post-concussion symptoms.

Purpose of the Study:

• To investigate the network structure of post-concussion symptoms in two distinct mild traumatic brain injury (mTBI) cohorts: an acute, treatment-seeking group and a group 10 years post-injury.
• To identify central symptoms within these networks and compare network structures across the two cohorts.

Main Methods:

• Utilized network analysis on symptom data from the Rivermead Post-Concussion Questionnaire.
• Analyzed two cohorts: 258 individuals acutely post-injury (average 6 weeks) and 193 individuals 10 years post-mild traumatic brain injury (mTBI) from the BIONIC study.
• Employed Network Comparison Test to assess structural differences between the two sample networks.

Main Results:

• Frustration, blurred vision, and concentration difficulties were identified as central symptoms in both the acute and the 10-year post-mild traumatic brain injury (mTBI) samples.
• A significant difference in overall network structure was detected between the two cohorts (p=0.045).
• Irritability and restlessness were the only symptoms showing significant differences in centrality strength between the acute and chronic mTBI groups.

Conclusions:

• Frustration, blurred vision, and concentration difficulties play a crucial role in the experience and persistence of post-concussion symptoms after mild traumatic brain injury (mTBI).
• The central role of these symptoms appears to remain stable over time, suggesting a consistent underlying network structure.
• Targeting these influential symptoms in rehabilitation programs may offer a promising strategy for improving outcomes in mild traumatic brain injury (mTBI) recovery.