Table 1.

Characteristics of study participants.

Subject #	Phase of menstrual cycle upon injury	Use of hormone contraceptives	Age of menarche	# of past diagnosed concussions	SCAT 3 symptom score visit 1	SCAT 3 symptom score visit 2	SCAT 3 symptom score visit 3
1	ELP	No	12	1	48	51	34
2	FP	Yes	13	1	5	0	0
3	MP	Yes	13	2	30	26	13
4	LLP	No	10	3	19	17	16
5	LLP	No	11	1	51	12	0
6	LLP	No	14	0	55	29	10
7	MP	No	12	0	20	0	0
8	FP	No	12	3	18	0	0
9	LLP	No	13	2	13	3	7
10	LLP	No	13	0	36	10	8
11	Amenorrhea	Yes	13	1	41	18	3
12	Amenorrhea	Yes	11	0	29	32	11
13	ELP	No	12	1	23	12	6
14	LLP	Yes	15	0	32	16	23
15	ELP	Yes	13	5	6	4	0
16	MP	No	14	2	36	22	5
17	LLP	No	12	2	65	41	24
18	LLP	No	14	0	8	0	0
19	LLP	Yes	12	3	33	25	26
20	ELP	Yes	12	0	24	12	8

ELP, early luteal phases; FP, follicular phase; LLP, late luteal phase; MP, menstrual phase; SCAT, sport concussion assessment tool.