In the last two decades, many professionals have manifested the necessity
to make of the prevention a scientific discipline, in which one works
on the basis of the objective evidence, without leaving place to practical
intuitive and/or simply based on the good will. Like result, today we
have a solid empirical base about the school strategies that obtain results
in the consumption and those that not, and even those that are against
preventive. Nevertheless, when reviewing the investigations developed
in this area, a wide variability in the sizes of the effects of the interventions
is verified, wich indicates the necessity to us to verify what characteristic
of the preventive programs are those responsible for this variability.
The aim of the study is to describe the associated characteristics
of the most effective interventions, developed in the school environment.
For it, the results of four revisions of revisions that have summarized in a
systematized way the evidence available by diverse studies of revisions
and meta-analyses are synthesized it.