Table 2. .

Total Post-Concussion Symptom Inventory Symptom Score By Sex, Age, and Concussion History in Uninjured Child and Youth Athletes

Variable	n	Meana	Mediana	SDa	Rangea	Skewa	Kurtosisa
Child group
Sex
Males	169	1.79	1	2.46	0−13	1.77	3.30
Females	164	1.45	1	2.09	0–11	2.13	4.91
Age, y
9	13	0.92	1	0.76	0−2	0.14	–1.50
10	59	1.64	1	2.27	0−8	1.49	1.32
11	112	1.62	0.5	2.56	0−11	2.27	5.66
12	149	1.68	1	2.18	0−9	1.61	2.18
Concussion history?
Yes	56	2.39	1	3.28	0−13	1.55	1.56
No	274	1.46	1	2.01	0−11	1.76	3.18
Previous concussions, No.	56	2.39	1	3.28	0−13	1.55	1.56
1	50	2.28	1	3.20	0−13	1.71	2.33
2	1	1	1	N/A	N/A	N/A	N/A
3	5	2.75	1.5	3.59	0−8	1.70	3.01
Youth group
Sex
Males	241	5.08	2	7.67	0−44	2.77	8.72
Females	310	5.45	3	6.37	0−43	2.36	7.89
Age, y
13	190	4.06	2	5.09	0−35	2.27	10.87
14	160	5.48	3	8.43	0−44	2.97	9.45
15	107	5.69	3	6.90	0−38	2.02	5.13
16	64	6.06	3.5	6.29	0−31	1.56	3.23
17	29	9.17	5	8.67	0−28	0.99	–0.03
Concussion history?
Yes	167	6.35	3	8.15	0−44	2.29	6.19
No	384	4.82	3	6.33	0−40	2.74	9.90
Previous concussions, No.
1	108	5.32	3	6.52	0−37	2.24	6.35
2	34	7.71	3	10.68	0−43	1.94	3.44
3	20	8.1	4.5	10.40	0−44	2.37	7.05
4	5	12.2	11	7.98	3−25	1.07	2.48

Abbreviation: N/A, not applicable.

^aStatistics based on total Post-Concussion Symptom Inventory score.