Table 2.

Clinical Outcome Measures.

Dependent Variable	Outcome Measure
Symptoms	The total number of symptoms reported (0 – 22)
Graded Symptom Checklist	The weighted total (0 – 6) of the 22 symptoms with higher scores reflecting greater symptom burden (0 – 132)
Standard Assessment of Concussion (SAC)	The total score (0 – 30) with a higher score reflecting better performance
Balance Error Scoring System (BESS)	The total number of errors across the six stances (0 – 60) with a lower score reflecting better performance
Clinical Reaction Time (CRT)	The mean of 8 trials with a lower score reflecting better performance
King Devick (KD)	At baseline, the faster of two trials which was performed error free. Following concussion, only trial is performed. A faster time reflects better performance.
Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT)	Verbal Memory: A higher score reflects better performance Visual Memory: A higher score reflects better performance Motor Speed: A higher score reflects better performance Reaction Time: A lower score reflects better performance