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Drug Abuse Warning Network Methodology Report, 2011 Update

Published by Substance Abuse and Mental Health Services Administration | U.S. Department of Health & Human Services | Metadata Last Checked: September 06, 2025 | Last Modified: 2025-09-06
This publication describes the methodologies used by the Drug Abuse Warning Network (DAWN), to collect, prepare, and analyze information on drug-related emergency department (ED) visits in the United States. The methods described here were initiated in 2004 and are current as of 2011.

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