Polysubstance Use in Early Adulthood Patterns and Developmental Precursors in an Urban Cohort.
Polysubstance use (i.e., simultaneous or sequential use of different psychoactive substances) is associated with increases in the risk of severe health problems and social impairments. The present study leverages community-representative, long-term longitudinal data from an urban cohort to assess (a) the prevalence and continuation of polysubstance use between adolescence and early adulthood (b) different patterns of polysubstance use (i.e., combinations of substances) in early adulthood and (c) childhood risk factors for polysubstance use in early adulthood. At age 20 (