ABSTRACT
INTRODUCTION More and more attention is being paid to the question: what works in health
promotion? Many countries focus on the issue: how to set priorities for health
in a more rational way, as budgetary constraints force them to reconsider
investment and insurance policies for health. In order to answer that question
systematic reviews are conducted. The problem of drawing clear conclusions
from publications is in itself difficult, but that is not the focus of this chapter.
Published reviews and opinions from articles in journals are not enough to