SAMHSA’s Major Data Collections

SAMHSA collects data on U.S. drug use demographics, substance use treatment, mental health and substance use treatment sites, and drug-related emergency room visits.

The following are summaries of SAMHSA’s major data collections, with links to SAMHSA’s Data section, where you can access timely surveys, reports, raw data, and analyses.

Emergency Department Data

Drug Abuse Warning Network (DAWN)

DAWN was a public health surveillance system that collected data on drug-related hospital emergency department visits. The system aimed to show the impact of drug use, misuse, and abuse in metropolitan areas and across the nation. DAWN will be combined into a new data collection called SAMHSA’s Emergency Department Surveillance System (SEDSS).

Substance Abuse Facilities Data

National Survey of Substance and Alcohol Treatment Services (N-SSATS)

N-SSATS is an annual census of all substance abuse treatment facilities in the United States, both public and private.

Mental Health Facilities Data

National Mental Health Services Survey (NMHSS)

NMHSS is an annual census of all mental health treatment facilities in the United States, both public and private.

Client-Level Substance Abuse Treatment Data

Treatment Episode Data Set (TEDS)

TEDS is an administrative data set reported by states on the demographic characteristics and substance use problems of people admitted to substance use treatment facilities. It primarily focuses on treatment sites that receive public funds. TEDS has an admissions and a discharge data set that can be linked to provide information on treatment episodes.

Behavioral Health Population and Prevalence Data

National Survey on Drug Use and Health (NSDUH)

NSDUH is the primary source of information on the prevalence, patterns, and consequences of alcohol, tobacco, and illegal drug use and abuse among civilian, non-institutionalized people ages 12 and up in the United States. NSDUH also tracks any mental illness (AMI), serious mental illness (SMI), and major depressive episodes (MDE), as well as suicide ideation and attempts among adults in the United States.

SAMHSA’s Emergency Department Surveillance System (SEDSS)

The National Center for Health Statistics, a division of the Centers for Disease Control and Prevention (CDC), is currently redesigning its hospital data collection systems, including its component on emergency room care. This new endeavor, called the National Hospital Care Survey, combines SAMHSA’s DAWN system with the CDC’s National Hospital Ambulatory Medical Care Survey and National Hospital Discharge Survey. Under this new data collection effort, SAMHSA will publish drug- and mental health-related data as SEDSS.

Learn more about SEDSS in the SAMHSA Budget Fiscal Year 2015.

Public-Use Data Files

Substance Abuse and Mental Health Data Archive (SAMHDA)

The SAMHSA Center for Behavioral Health Statistics and Quality (CBHSQ) promotes access to and use of the nation’s substance use and mental health data through SAMHDA. SAMHDA provides public-use data files, file documentation, and access to restricted-use data files to support a better understanding of this critical area of public health.

Last Updated: 05/16/2018