The 12-month posttreatment outcome results for a randomized clinical t
rial that tested the effectiveness of various combinations of I-month
psychosocial treatment interventions are reported for 184 clients who
used cocaine. Clients primarily used crack (93%), and the majority wer
e African American (95%). Overall, clients exhibited substantial pre-p
ost treatment gains: reduced regular cocaine use, reduced other drug u
se, reduced regular alcohol use, and reduced involvement in illegal ac
tivities. Logistic regression models produced significant odds ratios
showing that those who used cocaine regularly during the year after tr
eatment were more likely to have attended fewer treatment sessions, to
be female, to be less educated, to have been regular cocaine users pr
ior to treatment, and to have spent fewer days incarcerated during the
la-months after treatment. If was concluded that treatment positively
impacted posttreatment gains, and it was suggested that selective tai
loring of additional treatment services may produce additional treatme
nt gains.