117
Participants
Start Date
April 30, 2003
Primary Completion Date
May 31, 2004
Study Completion Date
October 31, 2004
Abstinence & Work
Participants in the Abstinence \& Work group were invited to attend the workplace throughout a 26-week intervention period, but were required to provide urine samples that indicated recent cocaine abstinence to gain access to the workplace and to maintain the maximum base pay of $8.00 per hour.
Work Only
Work Only participants were invited to attend the workplace throughout a 26-week intervention period. Participants in this group continued to provide mandatory urine samples and could earn base and performance pay. Work Only participants could work and earn base and performance pay independent of urinalysis results.
The Center for Learning and Health, Baltimore
National Institute on Drug Abuse (NIDA)
NIH
Johns Hopkins University
OTHER