The focus of this report is to describe the statistical inference procedures used to produce design-based estimates as presented in the 2019 detailed tables and the 2019 FFR, which are based on restricted-use data.

The focus of this report is to describe the statistical inference procedures used to produce design-based estimates as presented in the 2017 detailed tables and the 2017 FFR, which are based on restricted-use data.

The focus of this report is to describe the statistical inference procedures used to produce design-based estimates as presented in the 2020 detailed tables and the 2020 FFR, which are based on restricted-use data.

The focus of this report is to describe the statistical inference procedures used to produce design-based estimates as presented in the 2013 detailed tables, the 2013 mental health detailed tables, the 2013 national findings report, and the 2013 mental health findings report. Thestatistical procedures and information found in this report can also be generally applied to analyses based on the public use file as well as the restricted-use file available through the data portal. This report is organized as follows: Section 2 provides background informationconcerning the 2013 NSDUH; Section 3 discusses the prevalence rates and how they were calculated, including specifics on topics such as mental illness, major depressive episode, and serious psychological distress; Section 4 briefly discusses how missing item responses of variables that are not imputed may lead to biased estimates; Section 5 discusses sampling errors and how they were calculated; Section 6 describes the degrees of freedom that were used when comparing estimates; and Section 7 discusses how the statistical significance of differences between estimates was determined. Section 8 discusses confidence interval estimation, and Section 9 describes how past year incidence of drug use was computed. Finally, Section 10 discusses the conditions under which estimates with low precision were suppressed. Appendix A contains examples that demonstrate how to conduct various statistical procedures documented within this report using SAS® and SUDAAN® Software for Statistical Analysis of Correlated Data (RTI International, 2012) along with separate examples using Stata® software.

This report describes the statistical inference procedures used to produce design-based estimates for the 2012 National Survey on Drug Use and Health (NSDUH). These design-based estimates are presented in the 2012 national findings report detailed tables, as well as the 2012 mental health findings report and detailed tables. The report covers missingness rates, sampling error, degrees of freedom, statistical significance differences, confidence intervals, incidence estimates, and suppression of estimates with low precision.

This report describes the statistical inference procedures used to produce design-based estimates for the 2011 National Survey on Drug Use and Health (NSDUH). These design-based estimates are presented in the 2011 national findings report detailed tables, as well as the 2011 mental health findings report and detailed tables.

This report describes the statistical inference procedures used to produce design-based estimates for the 2010 National Survey on Drug Use and Health (NSDUH). These design-based estimates are presented in the 2010 national findings report detailed tables, as well as the 2010 mental health findings report and detailed tables.

This is the 2016 NSDUH Statistical Inference Report.

This is the 2016 NSDUH Sample Design Report.

This report describes the general principles and procedures for editing and imputation for the variables in the 2012 National Survey on Drug Use and Health (NSDUH). The report also describes imputation and the predictive mean neighborhood methodology.