Table 1.

Participant Characteristics

Participants
N	112
Sex	71 men, 41 women
Age	mean 40.7 (SD 8.1, range 20–58) years
Education	mean 11.8 years (SD 1.5, range 7–15)
Race/ethnicity	61% African-American, 37% white, 2% Hispanic
Employment	38% unemployed, 34% employed full-time, 27% employed part-time
Heroin Use at intake
Days used in past 30 – mean 29.3 days (SD 3.3, range 5–30; the participant reporting 5 days of use had transferred from a community methadone program)
Main route of administration - intravenous (IV, 61%) or intranasal (39%)
Cocaine Use at intake
Days used in last 30 – mean 20.0 days (SD 9.2, range 4–30)
Main route of administration - smoked (48%), intravenous (42%), intranasal (8%)