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Booster sessions
Summary of the evidence
A review of 29 reviews (McGrath et al., 2006) found evidence that booster sessions or similar extra components that aimed to reinforce the effects of a programme have a positive impact on the pre-specified outcomes. However, since the relationship between booster sessions and programme outcomes was not statistically examined, the link should be treated as hypothetical.
Details
Note: this evidence summary is only valid for the outcomes, target groups, settings and substances/patterns of use described below.
