Table 1:

Subject inclusion and exclusion criteria

Inclusion Criteria	Exclusion Criteria
Age 18–70 years	Focal neurologic deficits
Availability for testing within 2 weeks of concussion	History of head injury (based on history and medical record)
Glasgow Coma Scale = 13–15	Chronic posttraumatic abnormal findings on CT/MRI
Loss of consciousness < 20 minutes	Hospitalization due to the current head injury
Posttraumatic amnesia < 24 hours	History of a neurodevelopmental or neurologic disorder
English or Spanish proficiency	Major psychiatric disorder
	Illicit drug use within 30 days