View New Restricted-Use Data With Combined 4-Year Estimates

View New Restricted-Use Data With Combined 4-Year Estimates

New Restricted-Use NSDUH Data Allow for 4-Year Estimates

The National Survey on Drug Use and Health (NSDUH): 4-Year R-DAS (2002 to 2009) data are now available for online analysis using the Restricted-Use Data Analysis System (R-DAS). This restricted-use NSDUH data file produces combined 4-year estimates for 2002–2005 and 2006–2009. Variables available include:

• State codes to allow for state-level analyses
• Detailed race/ethnicity
• Country of birth
• Initiation of substance use (age of first use).

The NSDUH: 4-Year R-DAS (2002 to 2009) file is the second data file available on the recently launched R-DAS. The first file, the NSDUH: 8-Year R-DAS (2002 to 2009), allows for the creation of estimates based on a combined 8 years of data. In the upcoming months, SAMHSA is planning to release a restricted-use NSDUH file that will allow for the creation of 2-year estimates (2002–2003, 2004–2005, 2006–2007, 2008–2009).

View the NSDUH: 4-Year R-DAS (2002 to 2009) | Access R-DAS

Learn About R-DAS