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The NCS-2 was a re-interview of 5,001 individuals who participated in the Baseline (NCS-1). The study was conducted a decade after the initial baseline survey. The aim was to collect information about changes in mental disorders, substance use disorders, and the predictors and consequences of these changes over the ten years between the two surveys. The collection contains four major sections: the main survey, demographic data, diagnostic data, and state, county, and tract FIPS data.

In the main survey, respondents were asked about general physical and mental health. Questions focused on a variety of health issues, including limitations caused by respondents' health issues, substance use, childhood health, life-threatening illnesses, chronic conditions, medications taken in the past 12 months, level of functioning and symptoms experienced in the past 30 days, and any services used by the respondents since the (NCS-1). Additional questions focused on mental disorders including depression, bipolar disorder, specific and social phobias, generalized anxiety, intermittent explosive disorder, suicidality, post-traumatic stress disorder, neurasthenia, pre-menstrual dysphoric disorder, attention deficit/hyperactivity disorder, oppositional defiant disorder, conduct disorder, and separation anxiety. Respondents were also asked about their lives in general, with topics including employment, finances, marriage, children, their social lives, and stressful life events experienced in the past 12 months. Additionally, two personality assessments were included consisting of respondents' opinions on whether various true/false statements accurately described their personalities. Another focus of the main survey dealt with substance use and abuse, nonmedical use of prescription drugs, and polysubstance use. Interview questions in the NCS-2 Main Survey were customized to each respondent based on previous responses in the Baseline (NCS-1).

The second part contains demographic and other background information including age, education, employment, household composition, household income, marital status, and region.

The third part focuses on whether respondents met diagnostic criteria for psychological disorders asked about in the main survey.

The fourth part contains respondents' state, county, and tract FIPS data.

The NCS-2 was a re-interview of 5,001 individuals who participated in the Baseline (NCS-1). The study was conducted a decade after the initial baseline survey. The aim was to collect information about changes in mental disorders, substance use disorders, and the predictors and consequences of these changes over the ten years between the two surveys. The collection contains three major sections: the main survey, demographic data, and diagnostic data.

In the main survey, respondents were asked about general physical and mental health. Questions focused on a variety of health issues, including limitations caused by respondents' health issues, substance use, childhood health, life-threatening illnesses, chronic conditions, medications taken in the past 12 months, level of functioning and symptoms experienced in the past 30 days, and any services used by the respondents since the (NCS-1). Additional questions focused on mental disorders including depression, bipolar disorder, specific and social phobias, generalized anxiety, intermittent explosive disorder, suicidality, post-traumatic stress disorder, neurasthenia, pre-menstrual dysphoric disorder, attention deficit/hyperactivity disorder, oppositional defiant disorder, conduct disorder, and separation anxiety. Respondents were also asked about their lives in general, with topics including employment, finances, marriage, children, their social lives, and stressful life events experienced in the past 12 months. Additionally, two personality assessments were included consisting of respondents' opinions on whether various true/false statements accurately described their personalities. Another focus of the main survey dealt with substance use and abuse, nonmedical use of prescription drugs, and polysubstance use. Interview questions in the NCS-2 Main Survey were customized to each respondent based on previous responses in the Baseline (NCS-1).

The middle section contains demographic and other background information including age, education, employment, household composition, household income, marital status, and region.

The last section of the collection focused on whether respondents met diagnostic criteria for psychological disorders asked about in the main survey.

The Network for the Improvement of Addiction Treatment (NIATx) is a program funded by the Robert Wood Johnson Foundation and the Center for Substance Abuse Treatment to help substance abuse treatment facilities improve the effectiveness and efficiency of care offered to clients. A total of 38 facilities from across the country were awarded funding to implement the NIATx program between the years of 2003 to 2007. Data were extracted from administrative records from 82,274 clients. The data file covers the dates of contact and treatment with the facility, the number of follow-up units of care received, the primary substance of abuse, and basic demographic information.

The Adolescent Substance Abuse Prevention Study (ASAPS) was a randomized field trial designed to test the effectiveness of a new school-based substance abuse prevention program called Take Charge of Your Life (TCYL). The program consisted of two curricula, one for middle schools and the other for high schools, which were delivered through the Drug Abuse Resistance Education network of law enforcement officers (D.A.R.E.). TCYL was developed building on existing D.A.R.E. seventh/eighth grade and tenth/eleventh grade curricula and applied principles and strategies suggested by published literature on effective drug abuse prevention programming and effective middle and high school curricula design. ASAPS was conducted among a 2001-2002 multi-site cohort of seventh graders who were followed for five years until the 2005-2006 school year when they were in the eleventh grade. The first TCYL curriculum was delivered in the treatment schools when the students were in seventh grade and the second was delivered when they were in the ninth grade.

Over the five-year study period, the treatment and control students responded to seven self-administered surveys: (1) at baseline in the seventh grade, (2) post-intervention in the seventh grade, (3) in the eighth grade, (4) pre-intervention in the ninth grade, (5) post-intervention in the ninth grade, (6) in the tenth grade, and (7) in the eleventh grade. Topics covered by the surveys include normative beliefs, social skills, attitudes toward drug use, and self-reported use of alcohol, tobacco, marijuana, and other illicit drugs. The ASAPS data also include measures of implementation fidelity of the seventh and ninth grade TCYL curricula, which were obtained from trained observers who rated the D.A.R.E. officers' delivery in the classroom. The fidelity measures encompass content coverage and instructional strategy.

This data collection comprises two data files, both with public- and restricted-use versions. The first (the Main Data File) contains the students' survey responses and the seventh grade curriculum fidelity measures, while the second (the 9th Grade Officer Observations Data) contains the ninth grade curriculum fidelity measures.