Annals of emergency medicine
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We adopt a comparative framework to measure the extent to which variance in the efficacy of alcohol brief interventions to reduce hazardous and harmful drinking at less than or equal to 5-, 6-, and 12-month follow-up in emergency department settings can be determined by differences between study populations (targeted injury and noninjury specific). ⋯ Meta-analysis identified noninjury-specific studies as associated with better response to brief intervention than targeted injury studies. However, the inclusion of injured patients with noninjured ones in the experimental and control groups of noninjury-specific studies limited the interpretation of this finding.