Can a smartphone app speed up concussion recovery in teens?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Participants presenting to five PERC EDs after sustaining a direct or indirect head injury * Aged 12 through 17.99 years * Diagnosed with a definite or suspected concussion, defined by the American College of Rehabilitation Medicine definition * Score ≥6 on the 5P rule * Suffered the index injury in the previous 48 hours * Proficient in English or French Exclusion Criteria: * Glasgow Coma Scale ≤13 * Abnormality on standard neuroimaging studies, including positive head CT findings (Note: neuroimaging is not required, but may be performed if clinically indicated) * Neurosurgical operative intervention, intubation or intensive care required * Multi-system injuries with treatment requiring hospital admission, operating room or procedural sedation in ED (Note: hospital admission for observation or management of ongoing concussion symptoms is not an exclusion criteria) * Severe neurological developmental delay resulting in communication difficulties * Intellectual disability/mental retardation, autism spectrum disorder (history of attention deficit hyperactivity disorder, learning disability, or Tourette's syndrome is not an exclusion) * Intoxication at the time of ED presentation as per clinician judgment * No clear history of trauma as primary events (e.g., seizure, syncope or migraine) * Prior psychiatric hospitalization * Prior diagnosis of severe psychiatric disorder such as schizophrenia (diagnosis of anxiety or depression are not exclusionary) * Inability to obtain a proper written informed consent/assent (language barrier, absence of parental authority, developmental delay, intoxication, patient too confused to consent, etc.) * Legal guardian not present (certain forms need be completed by parents/legal guardians) * No internet or mobile/tablet access. * Previously enrolled in phase 1 or phase 2 of the feasibility trial or the efficacy trial.