Table 4. .

Frequencies of Self-Reported Symptoms on the 22-Item Post-Concussion Symptom Inventory-SR13 at Baseline in Uninjured Youth Athletes (13−17 Years Old) by Sex

Symptom	Sex (n)	22-Item Post-Concussion Symptom Inventory-SR13 Score, % (n)
		0 = Not a Problem	1	2	3 = Moderate Problem	4	5	6 = Severe Problem
Headachea	Males (243)	76.1 (185)	18.1 (44)	4.1 (10)	1.6 (4)	0 (0)	0 (0)	0 (0)
	Females (312)	72.8 (227)	14.1 (44)	9.3 (29)	2.9 (9)	1.0 (3)	0 (0)	0 (0)
Nauseaa	Males (243)	88.1 (214)	9.9 (24)	0.8 (2)	1.2 (3)	0 (0)	0 (0)	0 (0)
	Females (312)	92.0 (287)	4.8 (15)	1.3 (4)	1.3 (4)	0.6 (2)	0 (0)	0 (0)
Balance problemsa	Males (243)	93.8 (228)	4.9 (12)	0.8 (2)	0.4 (1)	0 (0)	0 (0)	0 (0)
	Females (312)	89.7 (280)	8.3 (26)	1.0 (3)	0.6 (2)	0.3 (1)	0 (0)	0 (0)
Dizzinessa	Males (242)	91.4 (222)	6.6 (16)	0.8 (2)	0.4 (1)	0.4 (1)	0 (0)	0 (0)
	Females (311)	88.5 (276)	8.0 (25)	2.2 (7)	0.3 (1)	0.6 (2)	0 (0)	0 (0)
Fatigueb	Males (242)	50.2 (122)	23.9 (58)	14.8 (36)	8.6 (21)	1.2 (3)	0.8 (2)	0 (0)
	Females (311)	33.3 (104)	33.3 (104)	18.6 (58)	11.2 (35)	2.9 (9)	0 (0)	0.3 (1)
Sleep more than usualb	Males (242)	82.7 (201)	11.1 (27)	3.7 (9)	0.8 (2)	0.4 (1)	0.4 (1)	0.4 (1)
	Females (309)	82.7 (258)	10.3 (32)	3.5 (11)	1.6 (5)	0.3 (1)	0.6 (2)	0 (0)
Drowsinessb	Males (243)	70.8 (172)	17.3 (42)	7.8 (19)	2.9 (7)	1.2 (3)	0 (0)	0 (0)
	Females (312)	78.8 (246)	14.4 (45)	4.5 (14)	1.6 (5)	0.3 (1)	0.3 (1)	0 (0)
Sensitivity to lighta	Males (243)	90.9 (221)	5.3 (13)	2.5 (6)	0.8 (2)	0 (0)	0.4 (1)	0 (0)
	Females (312)	89.1 (278)	7.7 (24)	2.2 (7)	0.6 (2)	0.3 (1)	0 (0)	0 (0)
Sensitivity to noisea	Males (243)	91.8 (223)	5.3 (13)	1.2 (3)	0.8 (2)	0 (0)	0.4 (1)	0.4 (1)
	Females (312)	94.6 (295)	3.5 (11)	1.9 (6)	0 (0)	0 (0)	0 (0)	0 (0)
Irritabilityc	Males (241)	82.7 (201)	10.3 (25)	3.7 (9)	1.6 (4)	0.4 (1)	0.4 (1)	0 (0)
	Females (312)	80.1 (250)	12.8 (40)	5.1 (16)	1.0 (3)	0 (0)	0.3 (1)	0.6 (2)
Sadnessc	Males (243)	90.5 (220)	6.6 (16)	1.2 (3)	0.4 (1)	0.4 (1)	0.4 (1)	0.4 (1)
	Females (312)	90.7 (283)	6.4 (20)	2.2 (7)	0.6 (2)	0 (0)	0 (0)	0 (0)
Nervousnessc	Males (243)	80.2 (195)	11.1 (27)	5.8 (14)	2.9 (7)	0 (0)	0 (0)	0 (0)
	Females (312)	68.2 (213)	24.4 (76)	3.2 (10)	3.5 (11)	0.6 (2)	0 (0)	0 (0)
Feeling more emotionalc	Males (243)	94.7 (230)	3.3 (8)	1.2 (3)	0.4 (1)	0.4 (1)	0 (0)	0 (0)
	Females (312)	86.5 (270)	9.3 (29)	2.6 (8)	1.3 (4)	0.3 (1)	0 (0)	0 (0)
Feeling slowed downd	Males (243)	83.5 (203)	9.9 (24)	4.5 (11)	2.1 (5)	0 (0)	0 (0)	0 (0)
	Females (312)	84.6 (264)	11.2 (35)	3.5 (11)	0.6 (2)	0 (0)	0 (0)	0 (0)
Feeling mentally foggyd	Males (243)	87.2 (212)	9.9 (24)	0.8 (2)	1.6 (4)	0.4 (1)	0 (0)	0 (0)
	Females (312)	86.9 (271)	9.0 (28)	3.5 (11)	0.3 (1)	0.3 (1)	0 (0)	0 (0)
Difficulty concentratingd	Males (243)	76.5 (186)	16.0 (39)	2.9 (7)	1.6 (4)	0.8 (2)	2.1 (5)	0 (0)
	Females (312)	76.9 (240)	16.0 (50)	4.8 (15)	1.3 (4)	0.6 (2)	0 (0)	0.3 (1)
Difficulty rememberingd	Males (242)	83.1 (202)	11.5 (28)	3.7 (9)	0.4 (1)	0.4 (1)	0.4 (1)	0 (0)
	Females (312)	88.1 (275)	7.4 (23)	1.6 (5)	1.6 (5)	0.3 (1)	0.6 (2)	0 (0)
Visual problems (double vision, blurring)a	Males (243)	93.0 (226)	5.3 (13)	1.6 (4)	0 (0)	0 (0)	0 (0)	0 (0)
	Females (311)	92.9 (290)	5.1 (16)	1.6 (5)	0 (0)	0 (0)	0 (0)	0 (0)
Get confused with directions or tasksd	Males (243)	89.3 (217)	7.4 (18)	2.1 (5)	0.4 (1)	0.8 (2)	0 (0)	0 (0)
	Females (312)	87.8 (274)	9.0 (28)	1.9 (6)	1.0 (3)	0 (0)	0.3 (1)	0 (0)
Move in a clumsy mannera	Males (243)	89.7 (218)	7.0 (17)	2.5 (6)	0.8 (2)	0 (0)	0 (0)	0 (0)
	Females (312)	88.5 (276)	8.7 (27)	2.6 (8)	0.3 (1)	0 (0)	0 (0)	0 (0)
Answer questions more slowlyd	Males (n = 243)	88.5 (215)	7.8 (19)	1.2 (3)	1.6 (4)	0.4 (1)	0.4 (1)	0 (0)
	Females (312)	89.7 (280)	8.0 (25)	1.3 (4)	0.6 (2)	0.3 (1)	0 (0)	0 (0)
Total score, median (range)	Males (243)				2 (0−44)
	Females (312)				3 (0−43)

^aPhysical domain.

^bFatigue domain.

^cEmotional domain.

^dCognitive domain.