van Ours, Jan - Tilburg University, Center for Economic Research - 2005
This paper uses information about prime age individuals living in Amsterdam to study the patterns of use of ecstasy and … cocaine.The information was collected in surveys in 1994, 1997 and 2001.The analysis shows that the use of ecstasy and cocaine … use cocaine are also more likely to use ecstacy.Whether or not an individual starts using ecstasy or cocaine is highly age …