Table 2.

Participants' postconcussion symptom inventory results.

	Before intervention	After intervention	Z	p
PCSI score (sum of 20 items)∗	36.9 ± 23.2	4.3 ± 5.0	−3.180b	0.001
Self-reported abnormality score∗	2.0 ± 3.3	0.2 ± 0.4	−2.877b	0.004

^∗Significant statistical difference.

^bBased on positive ranks.