Table 2.

Number of ERP Assessments by Age and Gender.

Ages 8–12, Number of P300 Assessments
Number of Assessments	High-risk		Low-risk		Total Subjects
	Male	Female	Male	Female
2	24	19	24	19	86
3	11	12	10	5	38
4	8	16	11	10	45
5	6	3	3	4	16
Total Subjects:	49	50	48	38	185

Ages 13–18, Number of P300 Assessments
Number of Assessments	High-risk		Low-risk		Total Subjects
	Male	Female	Male	Female
2	17	24	14	15	70
3	8	15	9	11	43
4	14	15	19	12	60
5	19	22	25	17	83
6	20	12	22	11	65
Total Subjects:	78	88	89	66	321

Ages 19–29, Number of P300 Assessments
Number of Assessments	High-risk		Low-risk		Total Subjects
	Male	Female	Male	Female
2	19	21	37	23	100
3	16	23	19	10	68
4	8	12	13	7	40
5	5	6	2	4	17
6	0	0	1	1	2
Total Subjects:	48	62	72	45	227