Abstract Introduction and Aims. Simultaneous polysubstance use (SPU) is a common phenomenon, yet little is known about its role in substance use initiation. Design and Methods. In the present study, 226 cannabis users completed structured interviews about their substance use history. For each substance ever used, participants provided details of their age of first use, their use in the...
Abstract Simultaneous polysubstance use (SPU) is a common phenomenon, yet little is known about how various substances are used with one another. In the present study 149 drug‐using university students completed structured interviews about their use of various substances. For each substance ever used, participants provided details about the type, order and amount of all substances...