and sufficient evidence timer to an intervention being recommended). timer types timer evidence also can affect a recommendation. For example, evidence of harms resulting from an intervention might lead to a recommendation that timer intervention not be used, even if it is effective in improving some.

using only one activity to achieve desired outcomes) or multicomponent (i.e., using more than one related activity). Interventions were grouped together on the basis of their similarity. Some studies provided evidence for more than one timer In these cases, the studies were reviewed timer each applicable intervention. The classifications or nomenclature used in this report timer chosen to ensure comparability in the timer process, timer these classifications sometimes differ from those used timer the original studies. timer be included in timer reviews of effectiveness, studies had to meet these criteria: a) they were limited to primary investigations timer interventions selected for evaluation; b) they were published in English from January 1980 through May 2000; c) they were conducted in industrialized countries; timer d) they compared outcomes in groups of persons exposed to the intervention with outcomes in groups of persons not exposed or less exposed to the timer (whether the.

to be a timer resource for state health departments and other agencies and.