OBJECTIVE: To determine if performance on symptom, cognitive, balance, fatigue, physical activity, and quality of life outcomes at 4-weeks post-injury in children with concussion differs based on acute 5P risk classification. DESIGN: Prospective cohort. SETTING: Laboratory. PATIENTS: Sixty-two children (age: 13.27 ± 2.50 years
29 (46.7%) females) with diagnosed concussion. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Patient demographics and post-injury assessments were completed within 72 hours of concussion and used to classify patients as "high", "moderate", or "low" PPCS risk. Children then completed a multi-modal assessment battery at 4-weeks post-concussion. Kruskal-Wallis assessments analyzed whether study outcomes differed between 5P risk groups. RESULTS: Significant group differences were observed in symptom (χ CONCLUSION: The 5P rule provides clinicians with valuable prognostic information related to PPCS and self-reported outcomes 4-weeks post-concussion, but not objective cognitive or balance outcomes. This information may help clinicians prioritize treatment resources to children most at-risk of prolonged concussion recovery.