… drug use onset has the most significant effects on drug use … data collection from adolescence
period to young adulthood. All … substance use and adolescents’ future drug use escalation. …

… , such as the perception of substance use approval. Schools … for the early onset of substance
use, as well as escalation to … peers on young adult substance use found evidence for peer …

… In addition, perceived peer SU during early adolescence was tested as a potential moderator
… Reporters also completed annual assessments beginning at age 11. Informed consent was …

… ’s youngest age, if he/she ever used illicit drugs. To facilitate analyses, low frequency illicit …
parenting prevents adolescents who initiated drug use from escalating into using new drugs (…

… to support younger teenagers is a public health priority. … of youth substance use and
underlined the importance of youth … Initiation and escalation were most commonly reported in low-…

… Younger age at substance use initiation is associated with a … (9); related factors, such as
perception of racism (10) and … been shown to predict substance use initiation and escalation (27)…

… The initiation and escalation of substance use during … substance use among adolescents
and young adults. … can be seen by examining mean prevalence of substance use by …

… peers, and the Internet generally, in substance use initiation, … the escalation of substance
use within socially homophilous … peer groups and substance use among youths and young …

… Research indicates that mental health problems, curiosity and perceived social norms are
the leading reason for initiation of ENDS use in young people [16-19]. Evidence suggests that …

… Similarly, peer selection can contribute to substance-use initiation, as … This could work
to create a context wherein adolescents and young adults seek greater support from …