Cochrane Summaries

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Interventions delivered to young people in non-school settings for the prevention of drug use

Gates S, McCambridge J, Smith LA, Foxcroft D
Published Online: 
21 January 2009

Drug use is widespread among young people including those still at school.Taking drugs is not a medical problem in itself but can affect physical andmental health and social functioning. People may become dependent on drugs, and use of low risk illicit drugs can escalate into use of higher risk
drugs. In schools, programs have been introduced to prevent or reduce drug use among young people. Non-school settings for interventions include youth
clubs, primary care centres, colleges, with families and in the community. Srategies can target entire populations or be directed at specific groups,
often those at high risk.
The review authors identified 17 controlled studies, 9 cluster randomised studies with 253 clusters and 8 individually randomised studies with 1230
participants. All but two of the studies were conducted in the USA. The other studies were in the UK and China. Follow-up periods varied from at
completion of the intervention to six years. The studies were too few and each intervention too different to draw any firm conclusions on whether
non-school based interventions prevent or reduce drug use by young people.The interventions with suggested benefits need further evaluation before it
can be firmly established that they are effective. One of two studies of motivational interviewing suggested that this intervention was beneficial on
self-reported cannabis use. Three family interventions (Focus on Families, Iowa Strengthening Families Program and Preparing for the Drug-Free Years)
were evaluated, in two separate studies, and may have been beneficial in preventing self-reported cannabis use. The latter two programs were
compared to the school-based Life Skills Training program. All of the eight studies of family interventions included contact with parents, in family
groups or in separate sessions for parents and their children. Multicomponent community interventions did not have any strong effects on
drug use. There were five studies, four of which added the community component to a school drug education program. Education and skills training
was not effective in two studies.
Many of the studies lacked blinding and had high numbers of participants lost to follow up. No study reported cost outcomes.

This record should be cited as: 
Gates S, McCambridge J, Smith LA, Foxcroft D. Interventions for prevention of drug use by young people delivered in non-school settings. Cochrane Database of Systematic Reviews 2006, Issue 1. Art. No.: CD005030. DOI: 10.1002/14651858.CD005030.pub2
Assessed as up to date: 
2 November 2005