FIG. 2.

Percent symptomatic rates. Percent symptomatic rates are displayed for healthy controls (HC; blue shading) and pediatric patients with mild traumatic brain injury (pmTBI; red shading) at the sub-acute (SA) (A) and early chronic (EC) (B) assessments. The X axis denotes the percentage of children classified as symptomatic based on either self or parental ratings from the Post-Concussion Symptom Inventory (PCSI) for six different methods (ICD-10: International Statistical Classification of Diseases and Related Health Problems, 10th revision; RCI: reliable change index; RB: regression-based). Retrospective ratings (R) were collected only at the SA period. The expected misclassification rate was operationally defined as 5%.