Percentage of Participants Testing Negative for Cocaine Use
Percentages are presented of participants who provided 3 urine samples that tested negative for cocaine at A, end of the incentive intervention (week 26) and B, end of the study (week 30) as a function of being in the abstinence incentive condition and receiving bupropion slow release (SR) (30 participants) or placebo (30 participants) or the relapse prevention condition and receiving bupropion SR (10 participants) or placebo (10 participants).