Sylwer fod y cymhwysiad hwn dan ddatblygiad. Os ydych chi'n gweld unrhyw gamgymeriadau neu os nad yw rhywbeth yn gweithio, cysylltwch â ni yn evidence.service@wales.nhs.uk.
Adolygiad Systematig
Mae'r awduron yn datgan. "(1) ‐ To summarise the current evidence about the effectiveness of interventions delivered in non‐school settings intended to prevent or reduce drug use by young people under 25; (2) ‐ To investigate whether interventions' effects are modified by the type and setting of the intervention, and the age of young people targeted; (3) ‐ To identify areas where more research is needed."
Mae'r awduron yn datgan. "Seventeen studies, 9 cluster randomised studies, with 253 clusters, 8 individually randomised studies with 1230 participants, evaluating four types of intervention: motivational interviewing or brief intervention, education or skills training, family interventions and multi‐component community interventions. Many studies had methodological drawbacks, especially high levels of loss to follow‐up. There were too few studies for firm conclusions. One study of motivational interviewing suggested that this intervention was beneficial on cannabis use. Three family interventions (Focus on Families, Iowa Strengthening Families Program and Preparing for the Drug‐Free Years), each evaluated in only one study, suggested that they may be beneficial in preventing cannabis use. The studies of multi component community interventions did not find any strong effects on drug use outcomes, and the two studies of education and skills training did not find any differences between the intervention and control groups."
Mae'r awduron yn datgan. "There is a lack of evidence of effectiveness of the included interventions. Motivational interviewing and some family interventions may have some benefit. Cost‐effectiveness has not yet been addressed in any studies, and further research is needed to determine whether any of these interventions can be recommended."