Figure 1. Participant Recruitment and Retention.

Flowchart of enrollment, inclusion, and data quality control from the subacute (SA) to early chronic (EC) visit for patients with pediatric mild traumatic brain injury (pmTBI) and matched healthy controls (HC). The asterisk denotes the total number of participants who were eligible to return, which is the sum of participants with usable structural MRI (sMRI) data and those whose data were excluded at the SA visit due to quality assurance issues.