Dr. Foxcroft et al., ALCOHOL MISUSE PREVENTION FOR YOUNG-PEOPLE - A SYSTEMATIC REVIEW REVEALS METHODOLOGICAL CONCERNS AND LACK OF RELIABLE EVIDENCE OF EFFECTIVENESS, Addiction, 92(5), 1997, pp. 531-537
In a systematic review we assessed the methodological quality of evalu
ations of alcohol misuse prevention programmes for young people, and r
ecorded evidence of effectiveness. Studies were identified through sys
tematic searches of electronic databases; hand searches of all obtaine
d papers, existing reviews and several journals; and mailshots to key
organizations, conferences and individuals. Relevant papers were check
ed and cross-checked by members of the review team, and only those stu
dies with an experimental or quasi-experimental design and positive at
tributes on a number of other quality criteria were included in the re
view. After pre-screening over 500 papers which reported prevention pr
ogrammes, information was systematically abstracted from 155 papers. O
nly 33 studies merited inclusion in the review, and most of these had
some methodological shortcomings. Twenty-one studies reported some sig
nificant short- and medium-term reductions in drinking behaviour. Of t
wo studies which carried out longer-term evaluations, only one reporte
d a significant longer-term effect, with small effect sizes. No factor
s clearly distinguished partially effective from ineffective or harmfu
l prevention programmes. In conclusion, the lack of reliable evidence
means that no one type of prevention programme can be recommended. In
particular there is a need to carry out well-designed scientific evalu
ations of the effectiveness of current or new prevention efforts which
target young people's alcohol misuse.