Updated 2008 to 2011 NSDUH public-use data and documentation files are now available for download, online analysis, and Quick Tables.
Updated files include revised mental illness variables that are based on a revised statistical model which predicts whether an adult NSDUH respondent had serious, moderate, mild, or no mental illness. The revised mental illness variables in the 2008 to 2011 NSDUH public-use data files are now comparable to the mental illness variables available in the 2012 NSDUH data file. For more information on the updated variables, users may refer to the “New and Corrected Data Since Last Release” section of the codebooks for each year. Additional information on the revised model is available in the technical report from SAMHSA.