Table 1.

Times of head injury, the longest period of time that the subject was knocked out or confused, year of TBI, and year of lifetime cocaine use, for all COCTBI subjects.

Subject #	Number of head trauma instances	Longest period of time	Years since TBI	Years of cocaine use
1	4	< 30 min	0.2	11
2	1	NP	19	15
3	1	NP	28	10
4	2	30 min – 1 day	33	8
5	6	30 min – 1day	26	15
6	1	< 30 min	NP	NP
7	1	< 30 min	27	8
8	1	30 min – 1 day	29	25
9	1	NP	31	25

NP=Not provided by the subject.