intervention being strongly recommended, and sufficient evidence corresponds to an intervention being recommended). Other types Pre Teen Thumbnails evidence also can affect a recommendation. Pre Teen Thumbnails example, evidence Pre Teen Thumbnails harms resulting from an intervention might lead to a recommendation that the intervention not be used.

precluded review of some interventions Pre Teen Thumbnails communitywide risk factor Pre Teen Thumbnails and counseling). Interventions reviewed were either single-component (i.e., using only one activity to Pre Teen Thumbnails 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 intervention. In these cases, the studies were reviewed for Pre Teen Thumbnails applicable intervention. The classifications Pre Teen Thumbnails nomenclature used in this report were chosen to ensure comparability in the Pre Teen Thumbnails process, and these classifications sometimes Pre Teen Thumbnails from those used Pre Teen Thumbnails Pre Teen Thumbnails original studies. To be included in the reviews of effectiveness, studies had to meet these criteria: a) they were limited Pre Teen Thumbnails primary investigations of interventions selected for evaluation; b) they were published in English from January 1980 Pre Teen Thumbnails May 2000; c) they were conducted Pre Teen Thumbnails industrialized countries; and d) they Pre Teen Thumbnails outcomes in groups outcomes.

of harms resulting from an Pre Teen Thumbnails might lead to a recommendation that the intervention not be used, even be.