98
Participants
Start Date
December 1, 2017
Primary Completion Date
December 1, 2020
Study Completion Date
December 1, 2020
Contingency Management
Participants will receive vouchers with monetary value for submitting crack cocaine negative urine samples
Standard treatment
Participants will receive the standard treatment offered at Unidade Recomeço Helvétia treatment program
Unidade Recomeço Helvétia, São Paulo
Washington State University
OTHER
Federal University of São Paulo
OTHER