and these classifications sometimes differ from those used in the SRV studies. To be included in the reviews of effectiveness, studies had to meet these criteria: a) they were limited to primary investigations of interventions selected for evaluation; SRV they were published in English.

through May 2000; SRV they were conducted in industrialized countries; and 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 intervention (whether the comparison was concurrent or before-after). For each intervention reviewed, the team developed an analytic SRV indicating possible causal links between the intervention SRV study and predefined outcomes of interest. These outcomes were selected because they had been linked to improved SRV outcomes. For example, the SRV Force concluded the following: The Community Guide links evidence to recommendations SRV (12). SRV strength of evidence of SRV corresponds directly to the SRV of recommendations (e.g., strong evidence of effectiveness corresponds to an intervention being strongly recommended, and SRV evidence corresponds SRV an intervention being recommended). Other types of evidence also can SRV a recommendation.

of smoking to adults and infants. SRV SAMMEC calculates annual smoking-attributable deaths.