Search results

Curated

Restricted

Adolescent Health and Development in Context (AHDC) Study, Franklin County, Ohio, Wave 1, 2014-2016 (ICPSR 39045)

Released/updated on: 2024-07-23

Geographic coverage: United States, Columbus (Ohio), Ohio

Time period: 2014-01-01--2016-12-31

The overarching objective of the Adolescent Health and Development in Context (AHDC) Project is to collect multilevel, multi-contextual data on a large sample of 1,405 youth ages 11 to 17 years in Franklin County, Ohio. The study emphasizes the interplay of social, psychological, and biological processes in shaping youth developmental outcomes such as risk behavior and victimization, mental and physical health, and educational outcomes. The study employs a prospective cohort design in which the data on youth and caregivers were collected at two time-points, approximately one year apart. The Wave 1 field period began in spring 2014 and was completed in summer 2016. Wave 2 was conducted between January and December 2016. Within each wave, participant data were collected over a weeklong period. An Entrance Survey with both a focal youth and his or her caregiver was followed by a seven-day smartphone-based Global Positioning System (GPS) tracking and EMA data collection period (EMA Week), and a final Exit Survey at the end of the week.

Curated

Simple Crosstabs

National Longitudinal Study of Adolescent to Adult Health (Add Health), 1994-2025 [Public Use] (ICPSR 21600)

Released/updated on: 2026-03-03

Geographic coverage: United States

Time period: 1994-01-01--2025-12-31

Downloads of Add Health require submission of the following information, which is shared with the original producer of Add Health: supervisor name, supervisor email, and reason for download. A Data Guide for this study is available as a web page and for download.

The National Longitudinal Study of Adolescent to Adult Health (Add Health), 1994-2018 [Public Use] is a longitudinal study of a nationally representative sample of U.S. adolescents in grades 7 through 12 during the 1994-1995 school year. The Add Health cohort was followed into young adulthood with four in-home interviews, the most recent conducted in 2008 when the sample was aged 24-32. Add Health combines longitudinal survey data on respondents' social, economic, psychological, and physical well-being with contextual data on the family, neighborhood, community, school, friendships, peer groups, and romantic relationships.

Add Health Wave I data collection took place between September 1994 and December 1995, and included both an in-school questionnaire and in-home interview. The in-school questionnaire was administered to more than 90,000 students in grades 7 through 12, and gathered information on social and demographic characteristics of adolescent respondents, education and occupation of parents, household structure, expectations for the future, self-esteem, health status, risk behaviors, friendships, and school-year extracurricular activities. All students listed on a sample school's roster were eligible for selection into the core in-home interview sample. In-home interviews included topics such as health status, health-facility utilization, nutrition, peer networks, decision-making processes, family composition and dynamics, educational aspirations and expectations, employment experience, romantic and sexual partnerships, substance use, and criminal activities. A parent, preferably the resident mother, of each adolescent respondent interviewed in Wave I was also asked to complete an interviewer-assisted questionnaire covering topics such as inheritable health conditions, marriages and marriage-like relationships, neighborhood characteristics, involvement in volunteer, civic, and school activities, health-affecting behaviors, education and employment, household income and economic assistance, parent-adolescent communication and interaction, parent's familiarity with the adolescent's friends and friends' parents.

Add Health data collection recommenced for Wave II from April to August 1996, and included almost 15,000 follow-up in-home interviews with adolescents from Wave I. Interview questions were generally similar to Wave I, but also included questions about sun exposure and more detailed nutrition questions. Respondents were asked to report their height and weight during the course of the interview, and were also weighed and measured by the interviewer.

From August 2001 to April 2002, Wave III data were collected through in-home interviews with 15,170 Wave I respondents (now 18 to 26 years old), as well as interviews with their partners. Respondents were administered survey questions designed to obtain information about family, relationships, sexual experiences, childbearing, and educational histories, labor force involvement, civic participation, religion and spirituality, mental health, health insurance, illness, delinquency and violence, gambling, substance abuse, and involvement with the criminal justice system. High School Transcript Release Forms were also collected at Wave III, and these data comprise the Education Data component of the Add Health study.

Wave IV in-home interviews were conducted in 2008 and 2009 when the original Wave I respondents were 24 to 32 years old. Longitudinal survey data were collected on the social, economic, psychological, and health circumstances of respondents, as well as longitudinal geographic data. Survey questions were expanded on educational transitions, economic status and financial resources and strains, sleep patterns and sleep quality, eating habits and nutrition, illnesses and medications, physical activities, emotional content and quality of current or most recent romantic/cohabiting/marriage relationships, and maltreatment during childhood by caregivers. Dates and circumstances of key life events occurring in young adulthood were also recorded, including a complete marriage and cohabitation history, full pregnancy and fertility histories from both men and women, an educational history of dates of degrees and school attendance, contact with the criminal justice system, military service, and various employment events, including the date of first and current jobs, with respective information on occupation, industry, wages, hours, and benefits. Finally, physical measurements and biospecimens were also collected at Wave IV, and included anthropometric measures of weight, height and waist circumference, cardiovascular measures such as systolic blood pressure, diastolic blood pressure, and pulse, metabolic measures from dried blood spots assayed for lipids, glucose, and glycosylated hemoglobin (HbA1c), measures of inflammation and immune function, including High sensitivity C-reactive protein (hsCRP) and Epstein-Barr virus (EBV).

Wave V data collection took place from 2016 to 2018, when the original Wave I respondents were 33 to 43 years old. For the first time, a mixed mode survey design was used. In addition, several experiments were embedded in early phases of the data collection to test response to various treatments. A similar range of data was collected on social, environmental, economic, behavioral, and health circumstances of respondents, with the addition of retrospective child health and socio-economic status questions. Physical measurements and biospecimens were again collected at Wave V, and included most of the same measures as at Wave IV.

The overall goal of Wave VI was to better understand life course trajectories, determinants, and consequences of critical dimensions of aging, health, and health disparities among U.S. early midlife adults. Data collection took place from 2022 to 2025, with participants between the ages of 39 and 51, with an average age of 44. Beyond longitudinal survey measures, newly added questions included those on cumulative stress, discrimination, despair, work-life balance, memory, physical limitations, and caregiving. Continuing from previous waves, home exams collected physical measurements and biospecimens with most of the same measures as Wave V.

Curated

Restricted

Strategic Prevention Framework State Incentive Grant (SPF SIG) National Cross-Site Evaluation [Restricted Use] (ICPSR 28921)

Released/updated on: 2014-03-24

Geographic coverage: North Carolina, Vermont, Indiana, United States, Wyoming, Tennessee, Maine, Arkansas, Washington, West Virginia, Colorado, Missouri, Guam, Arizona, Nevada, Rhode Island, Montana, Kentucky, Florida, Michigan, New Mexico, Illinois, Texas, Connecticut, New Hampshire, Louisiana, Palau

Time period: 2005-08-01--2007-09-30, 2006-12-14--2007-08-14, 2008-09-15--2009-06-30, 2008-10-15--2009-06-15, 2006-07-01--2006-09-30, 2005-12-01--2007-12-31, 2008-01-01--2008-06-30, 2008-07-01--2008-12-31, 2009-01-01--2009-06-30, 2009-07-01--2009-12-31, 2010-01-01--2010-06-30, 2005-12-01--2007-12-31, 2008-01-01--2008-06-30, 2008-07-01--2008-12-31, 2009-01-01--2009-06-30, 2009-07-01--2009-12-31, 2010-01-01--2010-06-30, 2005-12-01--2007-12-31, 2008-01-01--2008-06-30, 2008-07-01--2008-12-31, 2009-01-01--2009-06-30, 2009-07-01--2009-12-31, 2010-01-01--2010-06-30

The Strategic Prevention Framework State Incentive Grant (SPF SIG) National Cross-Site Evaluation was conducted to evaluate the Center for Substance Abuse Prevention (CSAP)'s SPF SIG initiative, which sought to: (1) prevent the onset and reduce the progression of substance abuse, including childhood and underage drinking; (2) reduce substance abuse-related problems in communities; and (3) build prevention capacity and infrastructure at the state and community levels. This cross-site evaluation included the 21 states and territories CSAP funded in FY2004 (Cohort 1) and an additional 5 States funded in Cohort 2 in FY2005 that were funded for up to 5 years to implement the SPF. The SPF is a five-step prevention planning model that requires states to: (1) conduct a statewide needs assessment, including the establishment of a State Epidemiological and Outcomes Workgroup (SEOW); (2) mobilize and build state and community capacity to address needs; (3) develop a statewide strategic plan for prevention; (4) implement evidence-based prevention, policies, and practices (EBPPP) to meet state and community needs; and (5) monitor and evaluate the implementation of their SPF SIG project. Under contract to the Substance Abuse and Mental Health Services Administration (SAMHSA) with funding provided by the National Institute on Drug Abuse (NIDA), Westat, in collaboration with the Pacific Institute for Research and Evaluation (PIRE) and The MayaTech Corporation, implemented a multilevel, multi-method quasi-experimental design to evaluate SPF SIG's impact. The scope of the evaluation encompassed national, state, and community levels. The design included comparison conditions at both the state and community levels. These data represent Phase I of the restricted use data release and contains extensive data on state-level implementation, community-level implementation, and state-level infrastructure, as well as other reference elements. A subsequent release (Phase II) will include state- and community-level outcomes, as well as data on community-level implementation, community-level implementation fidelity, state-level sustainability, and mediating variables.

Curated

Monitoring the Future: A Continuing Study of the Lifestyles and Values of Youth, 1988 (ICPSR 9259)

Released/updated on: 2006-03-30

Geographic coverage: United States

Time period: 1988-01-01--1988-12-31

This is the fourteenth annual survey in this series that explores changes in important values, behaviors, and lifestyle orientations of contemporary American youth. The students are randomly assigned one of five questionnaires, each with a different subset of topical questions, but all containing a set of "core" questions on demographics and drug use. There are about 1,300 variables across the questionnaires. Full details on the research design and procedures, sampling methodology, content areas, and questionnaire design, as well as percentage distributions by respondent's sex, race, region, college plans, and drug use, appear in the annual ISR volumes MONITORING THE FUTURE: QUESTIONNAIRE RESPONSES FROM THE NATION'S HIGH SCHOOL SENIORS.

Curated

HIV Transmission Network Metastudy Project: An Archive of Data From Eight Network Studies, 1988--2001 (ICPSR 22140)

Released/updated on: 2011-08-09

Geographic coverage: Manitoba, United States, Brooklyn, Flagstaff, New York (state), Global, Canada, Baltimore, Atlanta, Texas, Colorado, Georgia, Maryland, Colorado Springs, Arizona, Houston

Time period: 1988-01-01--2001-12-31

The purpose of this project was to establish a collection of datasets that could be used (1) to analyze the influence of partnership networks on the transmission of sexually transmitted and blood-borne infections, and (2) to examine the influence of study design on estimation of network properties and impacts. Eight studies contributed datasets to the collection.

They include:

Colorado Springs Project 90, 1988-1992
Bushwick [Brooklyn, NY] Social Factors and HIV Risk (SFHR) Study, 1991-1993
Atlanta Urban Networks Project, 1996-1999
Flagstaff Rural Network Study, 1996-1998
Atlanta Antiretroviral Adherence Study, 1998-2001
Houston Risk Networks Study, 1997-1998
Baltimore SHIELD (Self-Help in Eliminating Life-Threatening Diseases), 1997-1999
Manitoba Chlamydia Study, 1997-1998

Each study contains information on sexual, needle sharing, and/or social networks. Each dataset was harmonized to permit comparative analysis. Almost all of the studies were research projects funded by federal agency sources (e.g., United States Centers for Disease Control and the National Institutes of Health); one was funded by Canadian sources. These studies, all closed for further enrollment, provide a range of designs and study types as well as a range of transmitted diseases. This allows researchers to investigate the relative effect of personal behavior and network connections on the dynamics of disease transmission, and to explore the impact of sampling design on estimation of network properties. Respondents were asked questions about different test results such as HIV, chlamydia, syphilis and hepatitis. Demographic variables include race, ethnicity, marital status, age, and gender.

Curated

Restricted

Situational Crime Prevention at Specific Locations in Community Context: Place and Neighborhood Effects in Cincinnati, Ohio, 2005-2008 (ICPSR 26981)

Released/updated on: 2013-12-23

Geographic coverage: United States, Ohio, Cincinnati

Time period: 2006-07-01--2006-10-31, 2006-07-01--2006-10-31, 2005-01-01--2006-12-31, 2007-01-01--2008-12-31, 2007-03-01--2008-06-30, 2006-01-01--2006-12-31

The study examined the situational and contextual influences on violence in bars and apartment complexes in Cincinnati, Ohio. Interviews of managers and observations of sites were made for 199 bars (Part 1). Data were collected on 1,451 apartment complexes (Part 2). For apartment complexes owners were interviewed for 307 and observations were made at 994. Crime data were obtained from the Cincinnati Police Department records of calls for service and reported crimes.

Curated

Restricted

Multi-Site Adult Drug Court Evaluation (MADCE), 2003-2009 (ICPSR 30983)

Released/updated on: 2012-11-05

Geographic coverage: North Carolina, New York, United States, Illinois, Georgia, Florida, Washington, South Carolina, Pennsylvania

Time period: 2004-02-01--2004-06-30, 2005-03-01--2006-06-30, 2005-08-01--2006-12-31, 2006-09-01--2008-01-31, 2006-09-01--2008-01-31

The Multi-Site Adult Drug Court Evaluation (MADCE) study included 23 drug courts and 6 comparison sites selected from 8 states across the country. The purpose of the study was to: (1) Test whether drug courts reduce drug use, crime, and multiple other problems associated with drug abuse, in comparision with similar offenders not exposed to drug courts, (2) address how drug courts work and for whom by isolating key individual and program factors that make drug courts more or less effective in achieving their desired outcomes, (3) explain how offender attitudes and behaviors change when they are exposed to drug courts and how these changes help explain the effectiveness of drug court programs, and (4) examine whether drug courts generate cost savings.

Offenders in all 29 sites were surveyed in 3 waves, at baseline, 6 months later, and 18 months after enrollment. The research comprises three major components: process evaluation, impact evaluation, and a cost-benefit analysis. The process evaluation describes how the 23 drug court sites vary in program eligibility, supervision, treatment, team collaboration, and other key policies and practices. The impact evaluation examines whether drug courts produce better outcomes than comparison sites and tests which court policies and offender attitudes might explain those effects. The cost-benefit analysis evaluates drug court costs and benefits.

Curated

Restricted

Modeling Impacts of Policing Initiatives on Drug and Criminal Careers of Arrestees in New York City, New York, 1999 (ICPSR 3604)

Released/updated on: 2006-03-30

Geographic coverage: New York City, United States, New York (state)

Time period: 1999-01-01--1999-12-31

This study sought to understand the accuracy and validity of arrestee self-reports of drug use and the overall contact of arrestees with the criminal justice system, with a secondary focus on how arrestee self-reports of drug use correspond to urinalysis results. Moreover, this study investigated whether arrestees were aware of the New York City Police Department's Quality-of-Life (QOL) policing efforts and whether they had changed their criminal behavior as a result. A QOL Policing Supplement, designed to explore new means of evaluating police behavior, was administered to all adult arrestees in the five boroughs of New York City (Bronx, Brooklyn, Manhattan, Staten Island, and Queens) who had completed an Arrestee Drug Abuse Monitoring (ADAM) program interview, provided a urine specimen, and were willing to answer additional questions concerning QOL policing. Part 1, Policing Study Data, is a large integrated dataset containing all of the variables derived from the 1999 ADAM interviews, the Policing Supplement instrument, and administrative records data from the Criminal Justice Agency (CJA) and the New York State Division of Criminal Justice Services. This dataset is linked, via an anonymous case number, to Part 2, Arrestee Criminal History Data, which contains each arrestee's official criminal history.

Curated

Drug Abuse Treatment Outcome Study (DATOS), 1991-1994: [United States] (ICPSR 2258)

Released/updated on: 2010-02-16

Geographic coverage: United States

Time period: 1991-01-01--1999-12-31

Drug-Abuse Treatment Outcomes Study (DATOS) is a prospective study designed to determine the outcomes of adult drug abuse treatment delivered in typical, stable, community-based programs and to provide comprehensive information on continuing and new questions about the effectiveness of drug abuse treatment for adults currently available in a variety of publicly funded and private programs. The study examined the role of treatment outcomes and program type, client characteristics (including dependence, treatment history, and physical and mental health comorbidities), treatment received (e.g., length and intensity of services provided), therapeutic approaches, provision of aftercare, and research on the components of effective treatment, including factors that engage and retain clients in programs. Four types of programs were included: outpatient methadone (OPM), short-term inpatient (STI), long-term residential (LTR), and outpatient drug-free (ODF). Respondents were sampled from among adults admitted to drug abuse treatment programs in 11 representative U.S. cities during 1991-1993.

Clients entering treatment completed two comprehensive intake interviews (Intake 1 and Intake 2), approximately one week apart. This information is provided in Parts 1 and 2 of the data collection. These interviews were designed to obtain baseline data on drug use and other behaviors, as well as information on background and demographic characteristics, patterns of dependence, living situation and child custody status, education and training, income and expenditures, and HIV risk behaviors, along with assessments of dependence, mental health, physical health, and social functioning. Data on criminal justice status and criminal behavior are reported in Part 5, Illegal Activities Data, and are drawn from the Intake 1 interview. Data reflecting during-treatment progress, including service delivery and client satisfaction, were collected in the one-, three-, and six-month in-treatment interviews (Parts 3, 4, and 8). The 12-Month Post-Treatment Follow-Up Interview (Part 6) replicated many of the intake questions and focused on key behaviors in the year following treatment. Part 7 includes variables for time in treatment and interview availability indicators. The 12-Month Follow-Up Urine Result data (Part 9) provide the results from urine sample tests that were given to a sample of subjects at the time of the 12-Month Follow-Up Interview. Urine specimens were tested for eight categories of drugs (amphetamines, barbiturates, benzodiazepines, cannabinoids, cocaine metabolite, methaqualone, opiates, and phencyclidine). The drugs covered in the study were alcohol, tobacco, marijuana (hashish, THC), hallucinogens or psychedelics such as LSD, mescaline, and PCP, cocaine (including crack), heroin, narcotics or opiates such as morphine, codeine, Demerol, Dilaudid, and Talwin, downers or depressants such as sedatives, barbiturates, and tranquilizers, amphetamines or other stimulants such as speed or diet pills, and other drugs. Part 10 contains data for 1393 clients who were interviewed 5 years post treatment. This part contains many of the same types of questions asked during previous interviews.

Curated

Alcohol and Drug Services Study (ADSS), 1996-1999: [United States] (ICPSR 3088)

Released/updated on: 2009-04-01

Geographic coverage: United States

Time period: 1996-01-01--1999-12-31

The Alcohol and Drug Services Study (ADSS) was a national study of substance abuse treatment facilities and clients. The study was designed to develop estimates of the duration and costs of treatment and to describe the post-treatment status of substance abuse clients. ADSS continues and extends upon data collected in the Drug Services Research Survey, 1990: [United States] (ICPSR 3393) and the Services Research Outcome Study, 1995-1996: [United States] (ICPSR 2691) with a more complete sampling frame, an enhanced sampling design, and more detailed measures of treatment services provided, the costs of treatment, and clients in treatment. ADSS was implemented in three phases. In Phase I, a nationally representative sample of treatment facilities was surveyed to assess characteristics of treatment services and clients including treatment type, costs, program capacity, the number of clients served, waiting lists, and services provided to special populations. In Phase II, records were abstracted from a sample of clients in a subsample of Phase I facilities. This phase included four sub-components: (1) the Main Study, an analysis of abstracted records to assess the treatment process and characteristics of discharged clients, (2) the Incentive Study, which assessed the impact of varying financial payments on follow-up interview participation among non-methadone outpatient clients, (3) the In-Treatment Methadone Client study (ITMC), which assessed the treatment process of methadone maintenance, and (4) the comparison study of Early Dropout clients (EDO), which provided a proxy comparison group of records from substance abusers that went untreated. Phase III involved follow-up personal interviews with Phase II clients who could be located. This interview sought to determine post-treatment status in terms of substance use, economic condition, criminal justice involvement, and further substance abuse treatment episodes. Urine testing was conducted to validate self-reported drug use. Drugs included in the survey were alcohol, marijuana, cocaine, crack cocaine, heroin, barbiturates, benzodiazepines, amphetamines, non-prescribed use of prescription medications, abuse of over-the-counter medications, and other drugs. ADSS also included a cost study, which involved obtaining additional financial information from the Phase II facilities. A computerized desktop audit was used in the cost study to conduct consistency and accuracy checks on selected questionnaire data from Phases I and II. Variables were subsequently updated to represent the most accurate data available. Additional analysis variables were then created using combinations of the revised Phase I and II data.

Curated

Restricted

Prevalence and Case Characteristics of Drug-Facilitated, Incapacitated, and Forcible Rape Among College Students and Other Young Women in the United States, 2006 (ICPSR 20626)

Released/updated on: 2010-02-26

Geographic coverage: United States

Time period: 2006-01-23--2006-06-26

This study had four key goals. The first goal was to identify how many women in the United States and in college settings have ever been raped or sexually assaulted during their lifetime and within the past year. The next goal was to identify key case characteristics of drug-facilitated and forcible rapes. The third goal was to examine factors that affect the willingness of women to report rape to law enforcement or seek help from their support network. The last goal was to make comparisons between the different types of rape. Part 1 (General Population) data consisted of a national telephone household sample of 3,001 United States women, whereas Part 2 (College Population) data consisted of 2,000 college women selected from a reasonably representative national list of women attending four year colleges and universities. Both data parts contain the same 399 variables. Interviews were completed between January 23 and June 26, 2006. Respondents were asked questions regarding risk perception, fear of violence, and accommodation behavior. The women were also asked their opinions and attitudes about reporting rape to the authorities and disclosing rape to family members, peers, or other individuals. This includes questions about barriers to reporting and experiences that women have had being the recipient of a disclosure from a friend, relative, or other individual. The respondents were asked a series of questions about rape, including different types of forcible, drug- or alcohol-facilitated, and incapacitated rape. For women who endorsed one or more rape experiences, a wide range of rape characteristics were assessed including characteristics around the nature of the event, perpetrator-victim relationship, occurrence of injury, involvement of drugs or alcohol, receipt of medical care, and whether the rape was reported to the authorities. The respondents were also asked a series of questions regarding substance use, including prescription and illegal drugs and alcohol. Additionally, a series of questions related to post-traumatic stress disorder and depression were asked. Finally, the women were asked to provide basic demographic information such as age, race, ethnicity, and income.

Curated

Restricted

Project on Human Development in Chicago Neighborhoods (PHDCN): Substance Use, Wave 3, 2000-2002 (ICPSR 13743)

Released/updated on: 2006-10-11

Geographic coverage: United States, Chicago, Illinois

Time period: 2000-01-01--2002-12-31

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. The Substance Use interview was a self-report measure administered to Cohorts 6, 9, 12, 15, and 18 to obtain information regarding the subject's use of specific drugs.

Curated

Restricted

Project on Human Development in Chicago Neighborhoods (PHDCN): Alcohol Use Follow-Up, Wave 3, 2000-2002 (ICPSR 13677)

Released/updated on: 2007-02-06

Geographic coverage: United States, Chicago, Illinois

Time period: 2000-01-01--2002-12-31

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Alcohol Use Follow-Up survey. It was adapted from the Diagnostic Interview Schedule (DIS-IV) Alcohol Module and was administered to subjects in Cohorts 15 and 18. It collected information regarding the use of alcohol by the subjects as well as social or health problems resulting from drinking.

Curated

Restricted

Project on Human Development in Chicago Neighborhoods (PHDCN): Consequences of Substance Use, Wave 3, 2000-2002 (ICPSR 13687)

Released/updated on: 2007-02-06

Geographic coverage: United States, Chicago, Illinois

Time period: 2000-01-01--2002-12-31

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Consequences of Substance Use interview. It was administered to subjects in Cohorts 9, 12, 15, and 18 and obtained information related to outcomes of the subject being caught, by school officials, police, or their parents, using alcohol or drugs. Subjects in Cohorts 15 and 18 were asked questions from a slightly different instrument than subjects in Cohorts 9 and 12. Cohorts 15 and 18 were asked more detailed questions regarding what substances and what quantity subjects were caught with.

Curated

Restricted

Project on Human Development in Chicago Neighborhoods (PHDCN): Deviance of Peers, Wave 3, 2000-2002 (ICPSR 13693)

Released/updated on: 2007-02-06

Geographic coverage: United States, Chicago, Illinois

Time period: 2000-01-01--2002-12-31

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Deviance of Peers instrument. It was a self-report interview that obtained information about peer involvement in conventional and delinquent activities. Compared to the Wave 1 version (PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): DEVIANCE OF PEERS, WAVE 1, 1994-1997 [ICPSR 13585]), a reduced set of items was included in Wave 3, but Wave 3 had additional questions regarding the age and gender of peers involved in particular behaviors. Information about peer pressure to use drugs and/or alcohol was also collected. It was administered to subjects in Cohorts 6, 9, and 12. The Wave 3 survey questions were identical to those asked in Wave 2 (PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): DEVIANCE OF PEERS, WAVE 2, 1997-2000 [ICPSR 13615]).

Curated

Restricted

Project on Human Development in Chicago Neighborhoods (PHDCN): Alcohol Use, Wave 3, 2000-2002 (ICPSR 13673)

Released/updated on: 2007-02-05

Geographic coverage: United States, Chicago, Illinois

Time period: 2000-01-01--2002-12-31

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Alcohol Use survey. It was adapted from the short form of the Composite International Diagnostic Interview (UM-CIDI Short Form), and it obtained information about the use of alcohol by the subjects' primary caregivers (PCs). It was administered to PCs in Cohorts 0, 3, 6, 9, 12, and 15.

Curated

Restricted

Project on Human Development in Chicago Neighborhoods (PHDCN): Drug Use, Wave 3, 2000-2002 (ICPSR 13694)

Released/updated on: 2007-02-06

Geographic coverage: United States, Chicago, Illinois

Time period: 2000-01-01--2002-12-31

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Drug Use instrument. It was administered to subjects in Cohorts 0, 3, 6, 9, 12, and 15 and was a self-report measure used to obtain information regarding the subject's use of specific drugs without a doctor's prescription, in larger amounts than prescribed, or for a longer period than prescribed.

Curated

Restricted

Project on Human Development in Chicago Neighborhoods (PHDCN): Perceptions of Drug Risk, Wave 3, 2000-2002 (ICPSR 13728)

Released/updated on: 2007-02-06

Geographic coverage: United States, Chicago, Illinois

Time period: 2000-01-01--2002-12-31

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Perceptions of Drug Risk instrument. This instrument obtained information about the perceived harm in using substances, the difficulty of obtaining substances, and the experience of being approached to buy drugs. It was administered to Cohorts 6, 9, and 12. It is closely related to PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): PERCEPTIONS OF DRUG RISK, WAVE 2, 1997-2000 (ICPSR 13643).

Curated

Simple Crosstabs

Population Assessment of Tobacco and Health (PATH) Study [United States] Special Collection Public-Use Files (ICPSR 37786)

Released/updated on: 2026-07-08

Geographic coverage: United States

Time period: 2017-01-01--2018-12-31, 2020-01-01--2020-12-31, 2023-01-01--2023-12-31

The PATH Study was launched in 2011 to inform the Food and Drug Administration's regulatory activities under the Family Smoking Prevention and Tobacco Control Act (TCA). The PATH Study is a collaboration between the National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), and the Center for Tobacco Products (CTP), Food and Drug Administration (FDA). The study sampled over 150,000 mailing addresses across the United States to create a national sample of people who do and do not use tobacco.

45,971 adults and youth constitute the first (baseline) wave, Wave 1, of data collected by this longitudinal cohort study. These 45,971 adults and youth along with 7,207 "shadow youth" (youth ages 9 to 11 sampled at Wave 1) make up the 53,178 participants that constitute the Wave 1 Cohort. Respondents are asked to complete an interview at each follow-up wave. Youth who turn 18 by the current wave of data collection are considered "aged-up adults" and are invited to complete the Adult Interview. Additionally, "shadow youth" are considered "aged-up youth" upon turning 12 years old, when they are asked to complete an interview after parental consent.

At Wave 4, a probability sample of 14,098 adults, youth, and shadow youth ages 10 to 11 was selected from the civilian, noninstitutionalized population (CNP) at the time of Wave 4. This sample was recruited from residential addresses not selected for Wave 1 in the same sampled Primary Sampling Units (PSUs) and segments using similar within-household sampling procedures. This "replenishment sample" was combined for estimation and analysis purposes with Wave 4 adult and youth respondents from the Wave 1 Cohort who were in the CNP at the time of Wave 4. This combined set of Wave 4 participants, 52,731 participants in total, forms the Wave 4 Cohort.

At Wave 7, a probability sample of 14,863 adults, youth, and shadow youth ages 9 to 11 was selected from the CNP at the time of Wave 7. This sample was recruited from residential addresses not selected for Wave 1 or Wave 4 in the same sampled PSUs and segments using similar within-household sampling procedures. This "second replenishment sample" was combined for estimation and analysis purposes with the Wave 7 adult and youth respondents from the Wave 4 Cohorts who were at least age 15 and in the CNP at the time of Wave 7. This combined set of Wave 7 participants, 46,169 participants in total, forms the Wave 7 Cohort.

Please refer to the Public-Use Files User Guide that provides further details about children designated as "shadow youth" and the formation of the Wave 1, Wave 4, and Wave 7 Cohorts.

Wave 4.5 was a special data collection for youth only who were aged 12 to 17 at the time of the Wave 4.5 interview. Wave 4.5 was the fourth annual follow-up wave for those who were members of the Wave 1 Cohort. For those who were sampled at Wave 4, Wave 4.5 was the first annual follow-up wave.

Wave 5.5, conducted in 2020, was a special data collection for Wave 4 Cohort youth and young adults ages 13 to 19 at the time of the Wave 5.5 interview. Also in 2020, a subsample of Wave 4 Cohort adults ages 20 and older were interviewed via the PATH Study Adult Telephone Survey (PATH-ATS).

Wave 7.5 was a special collection for Wave 4 and Wave 7 Cohort youth and young adults ages 12 to 22 at the time of the Wave 7.5 interview. For those who were sampled at Wave 7, Wave 7.5 was the first annual follow-up wave.

Dataset 1002 (DS1002) contains the data from the Wave 4.5 Youth and Parent Questionnaire. This file contains 1,395 variables and 13,131 cases. Of these cases, 11,378 are continuing youth having completed a prior Youth Interview. The other 1,753 cases are "aged-up youth" having previously been sampled as "shadow youth."

Datasets 1112, 1212, and 1222, (DS1112, DS1212, and DS1222) are data files comprising the weight variables for Wave 4.5. The "all-waves" weight file contains weights for participants in the Wave 1 Cohort who completed a Wave 4.5 Youth Interview and completed interviews (if old enough to do so) or verified their information with the study (if not old enough to be interviewed) in Waves 1, 2, 3, and 4.

There are two separate files with "single wave" weights: one for the Wave 1 Cohort and one for the Wave 4 Cohort. The "single-wave" weight file for the Wave 1 Cohort contains weights for youth who completed an interview in Wave 1 and in Wave 4.5, regardless of their participation in the intervening waves. The "single-wave" weight file for the Wave 4 Cohort contains weights for all Wave 4.5 Youth Interview respondents in the Wave 4 Cohort.

Dataset 1503 (DS1503) contains data derived from responses to questionnaires in Wave 1, Wave 2, Wave 3, Wave 4, and Wave 4.5 indicating if participants had ever/never used various tobacco products as of the Wave 4.5 data collection period. This data file contains 26 variables for all 67,276 study participants as of the Wave 4.5 data collection. This file is provided for reference only to simplify the definitions of tobacco use variables in the Adult and Youth data files for subsequent waves.

Dataset 2001 (DS2001) contains the data from the Wave 5.5 Adult Questionnaire. This file contains 2,323 variables and 3,628 cases. Of these cases, 1,014 are continuing adults having completed a prior Adult Questionnaire. The other 2,614 cases are "aged-up adults" having previously completed a Youth Questionnaire.

Dataset 2002 (DS2002) contains the data from the Wave 5.5 Youth and Parent Questionnaire. This file contains 1,625 variables and 7,129 cases. Of these cases, 7,076 are continuing youth having completed a prior Youth Interview. The other 53 cases are "aged-up youth" having previously been sampled as "shadow youth."

Datasets 2111, 2112, 2121, 2122, 2221, and 2222 (DS2111, DS2112, DS2121, DS2122, DS2221, and DS2222) are data files comprising the weight variables for Wave 5.5. In Wave 5.5, the weight variables are in individual data files corresponding to the Wave 1 and Wave 4 Cohorts and different weight types.

There are two separate sets of files with "all-waves" weights: one for the Wave 1 Cohort and one for the Wave 4 Cohort. The "all-waves" weight file for the Wave 1 Cohort contains weights for participants who completed a Wave 5.5 interview and completed interviews (if old enough to do so) or verified their information (if not old enough to be interviewed) in Waves 1, 2, 3, 4, 4.5, and 5. The "all-waves" weight file for the Wave 4 Cohort contains weights for participants who completed a Wave 5.5 interview and completed interviews (if old enough to do so) or verified their information (if not old enough to be interviewed) in Waves 4, 4.5, and 5.

The "single-wave" weight file for the Wave 4 Cohort contains weights for all Wave 5.5 interview respondents.

Dataset 3001 (DS3001) contains the data from PATH-ATS. This file contains 908 variables and 8,874 cases, all of which are continuing adults having completed a prior Adult Questionnaire, with their most recent interview in Wave 5.

Datasets 3111 and 3121 (DS3111 and DS3121) are data files comprising weights for PATH-ATS. In PATH-ATS, weight variables are in individual files corresponding to the Wave 1 and Wave 4 Cohorts.

The "all-waves" weight file for the Wave 1 Cohort contains weights for participants who completed an interview in PATH-ATS and completed interviews in Waves 1, 2, 3, 4, and 5. The "all-waves" weight file for the Wave 4 Cohort contains weights for participants who completed an interview in PATH-ATS; all PATH-ATS respondents completed interviews in Wave 4 and Wave 5.

Dataset 2503 (DS2503) contains data derived from responses to questionnaires in Wave 1, Wave 2, Wave 3, Wave 4, Wave 4.5, Wave 5, Wave 5.5, and PATH-ATS, indicating if participants had ever/never used various tobacco products as of the Wave 5.5/PATH-ATS data collection period. This data file contains 26 variables for all 67,276 study participants as of the Wave 5.5/PATH-ATS data collection. This file is provided for reference only to simplify the definitions of tobacco use variables in the Adult and Youth data files for subsequent waves.

Dataset 4001 (DS4001) contains the data from the Wave 7.5 Adult Questionnaire. This file contains 2,760 variables and 7,961 cases. Of these cases, 5,952 are continuing adults having completed a prior Adult Questionnaire. The other 2,009 cases are "aged-up adults" having previously completed a Youth Questionnaire.

Dataset 4002 (DS4002) contains the data from the Wave 7.5 Youth and Parent Questionnaire. This file contains 1,889 variables and 8,949 cases. Of these cases, 7,064 are continuing youth having completed a prior Youth Interview. The other 1,885 cases are "aged-up youth" having previously been sampled as "shadow youth."

Datasets 4111, 4112, 4121, 4122, 4221, 4222, 4231, and 4232 (DS4111, DS4112, DS4121, DS4122, DS4221, DS4222, DS4231, and DS4232) are data files comprising the weight variables for Wave 7.5. In Wave 7.5, the weight variables are in individual data files corresponding to the Wave 1, Wave 4, and Wave 7 Cohorts and different weight types.

There are two separate sets of files with "all-waves" weights: one for the Wave 1 Cohort and one for the Wave 4 Cohort. The "all-waves" weight file for the Wave 1 Cohort contains weights for participants who completed a Wave 7.5 interview and completed interviews (if old enough to do so) or verified their information (if not old enough to be interviewed) in Waves 1, 2, 3, 4, 4.5, 5, 5.5, 6, and 7. The "all-waves" weight file for the Wave 4 Cohort contains weights for participants who completed a Wave 7.5 interview and completed interviews (if old enough to do so) or verified their information (if not old enough to be interviewed) in Waves 4, 4.5, 5, 5.5, 6, and 7.

There are two separate sets of files with "single-waves" weights: one for the Wave 4 Cohort and one for the Wave 7 Cohort. The "single-wave" weight file for the Wave 4 Cohort contains weights for Wave 7.5 interview respondents in the Wave 4 Cohort, regardless of their response status at Waves 4.5, 5, 5.5, 6, or 7. The "single-wave" weight file for the Wave 7 Cohort contains weights for all Wave 7.5 interview respondents in the Wave 7 Cohort.

Dataset 4503 (DS4503) contains data derived from responses to questionnaires in Wave 1, Wave 2, Wave 3, Wave 4, Wave 4.5, Wave 5, Wave 5.5, PATH-ATS, Wave 6, Wave 7, and Wave 7.5, indicating if participants had ever/never used various tobacco products as of the Wave 7.5 data collection period. This data file contains 25 variables for all 82,139 study participants as of the Wave 7.5 data collection. This file is provided for reference only to simplify the definitions of tobacco use variables in the Adult and Youth data files for subsequent waves.

Curated

Restricted

Project on Human Development in Chicago Neighborhoods (PHDCN): Substance Use Follow-Up, Wave 3, 2000-2002 (ICPSR 13744)

Released/updated on: 2007-02-07

Geographic coverage: United States, Chicago, Illinois

Time period: 2000-01-01--2002-12-31

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Substance Use Follow-Up instrument. It was adapted from the Composite International Diagnostic Interview (CIDI) and was administered to subjects in Cohorts 15 and 18. It obtained information regarding the subject's use of specific drugs. It is closely related to PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): SUBSTANCE USE, WAVE 1, 1994-1997 (ICPSR 13602), PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): SUBSTANCE USE, WAVE 2, 1997-2000 (ICPSR 13659), and PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): SUBSTANCE USE, WAVE 3, 2000-2002 (ICPSR 13743).

Curated

Restricted

Population Assessment of Tobacco and Health (PATH) Study [United States] Special Collection Restricted-Use Files (ICPSR 37519)

Released/updated on: 2026-04-13

Geographic coverage: United States

Time period: 2017-01-01--2018-12-31, 2020-01-01--2020-12-31, 2023-01-01--2023-12-31

The PATH Study was launched in 2011 to inform the Food and Drug Administration's regulatory activities under the Family Smoking Prevention and Tobacco Control Act (TCA). The PATH Study is a collaboration between the National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), and the Center for Tobacco Products (CTP), Food and Drug Administration (FDA). The study sampled over 150,000 mailing addresses across the United States to create a national sample of people who use or do not use tobacco.

45,971 adults and youth constitute the first (baseline) wave, Wave 1, of data collected by this longitudinal cohort study. These 45,971 adults and youth along with 7,207 "shadow youth" (youth ages 9 to 11 sampled at Wave 1) make up the 53,178 participants that constitute the Wave 1 Cohort. Respondents are asked to complete an interview at each follow-up wave. Youth who turn 18 by the current wave of data collection are considered "aged-up adults" and are invited to complete the Adult Interview. Additionally, "shadow youth" are considered "aged-up youth" upon turning 12 years old, when they are asked to complete an interview after parental consent.

At Wave 4, a probability sample of 14,098 adults, youth, and shadow youth ages 10 to 11 was selected from the civilian, noninstitutionalized population (CNP) at the time of Wave 4. This sample was recruited from residential addresses not selected for Wave 1 in the same sampled Primary Sampling Units (PSUs) and segments using similar within-household sampling procedures. This "replenishment sample" was combined for estimation and analysis purposes with Wave 4 adult and youth respondents from the Wave 1 Cohort who were in the CNP at the time of Wave 4. This combined set of Wave 4 participants, 52,731 participants in total, forms the Wave 4 Cohort.

At Wave 7, a probability sample of 14,863 adults, youth, and shadow youth ages 9 to 11 was selected from the CNP at the time of Wave 7. This sample was recruited from residential addresses not selected for Wave 1 or Wave 4 in the same sampled PSUs and segments using similar within-household sampling procedures. This "second replenishment sample" was combined for estimation and analysis purposes with the Wave 7 adult and youth respondents from the Wave 4 Cohorts who were at least age 15 and in the CNP at the time of Wave 7. This combined set of Wave 7 participants, 46,169 participants in total, forms the Wave 7 Cohort.

Please refer to the Restricted-Use Files User Guide that provides further details about children designated as "shadow youth" and the formation of the Wave 1, Wave 4, and Wave 7 Cohorts.

Wave 4.5 was a special data collection for youth only who were aged 12 to 17 at the time of the Wave 4.5 interview. Wave 4.5 was the fourth annual follow-up wave for those who were members of the Wave 1 Cohort. For those who were sampled at Wave 4, Wave 4.5 was the first annual follow-up wave.

Wave 5.5, conducted in 2020, was a special data collection for Wave 4 Cohort youth and young adults ages 13 to 19 at the time of the Wave 5.5 interview. Also in 2020, a subsample of Wave 4 Cohort adults ages 20 and older were interviewed via the PATH Study Adult Telephone Survey (PATH-ATS).

Wave 7.5 was a special collection for Wave 4 and Wave 7 Cohort youth and young adults ages 12 to 22 at the time of the Wave 7.5 interview. For those who were sampled at Wave 7, Wave 7.5 was the first annual follow-up wave.

Dataset 1002 (DS1002) contains the data from the Wave 4.5 Youth and Parent Questionnaire. This file contains 1,617 variables and 13,131 cases. Of these cases, 11,378 are continuing youth having completed a prior Youth Interview. The other 1,753 cases are "aged-up youth" having previously been sampled as "shadow youth"

Datasets 1112, 1212, and 1222, (DS1112, DS1212, and DS1222) are data files comprising the weight variables for Wave 4.5. The "all-waves" weight file contains weights for participants in the Wave 1 Cohort who completed a Wave 4.5 Youth Interview and completed interviews (if old enough to do so) or verified their information with the study (if not old enough to be interviewed) in Waves 1, 2, 3, and 4.

There are two separate files with "single wave" weights: one for the Wave 1 Cohort and one for the Wave 4 Cohort. The "single-wave" weight file for the Wave 1 Cohort contains weights for youth who completed an interview in Wave 1 and in Wave 4.5, regardless of their participation in the intervening waves. The "single-wave" weight file for the Wave 4 Cohort contains weights for all Wave 4.5 Youth Interview respondents in the Wave 4 Cohort.

Dataset 1402 (DS1402) contains the Wave 4.5 State Identifier data for Youth and Parents and has 5 variables and 13,131 cases. The State Identifier dataset includes PERSONID for linking the State Identifier to the questionnaire data and 3 variables designating the state (state Federal Information Processing System (FIPS), state abbreviation, and full name of the state). The State Identifier values in this dataset represent participants' state of residence at the time of Wave 4.5.

Dataset 1503 (DS1503) contains data derived from responses to questionnaires in Wave 1, Wave 2, Wave 3, Wave 4, and Wave 4.5 indicating if participants had ever/never used various tobacco products as of the Wave 4.5 data collection period. This data file contains 26 variables for all 67,276 study participants as of the Wave 4.5 data collection. This file is provided for reference only to simplify the definitions of tobacco use variables in the Adult and Youth data files for subsequent waves.

Dataset 2001 (DS2001) contains the data from the Wave 5.5 Adult Questionnaire. This file contains 2,619 variables and 3,628 cases. Of these cases, 1,014 are continuing adults having completed a prior Adult Questionnaire. The other 2,614 cases are "aged-up adults" having previously completed a Youth Questionnaire.

Dataset 2002 (DS2002) contains the data from the Wave 5.5 Youth and Parent Questionnaire. This file contains 1,871 variables and 7,129 cases. Of these cases, 7,076 are continuing youth having completed a prior Youth Interview. The other 53 cases are "aged-up youth" having previously been sampled as "shadow youth."

Datasets 2111, 2112, 2121, 2122, 2221, and 2222 (DS2111, DS2112, DS2121, DS2122, DS2221, and DS2222) are data files comprising the weight variables for Wave 5.5. In Wave 5.5, the weight variables are in individual data files corresponding to the Wave 1 and Wave 4 Cohorts and different weight types.

There are two separate sets of files with "all-waves" weights: one for the Wave 1 Cohort and one for the Wave 4 Cohort. The "all-waves" weight file for the Wave 1 Cohort contains weights for participants who completed a Wave 5.5 interview and completed interviews (if old enough to do so) or verified their information (if not old enough to be interviewed) in Waves 1, 2, 3, 4, 4.5, and 5. The "all-waves" weight file for the Wave 4 Cohort contains weights for participants who completed a Wave 5.5 interview and completed interviews (if old enough to do so) or verified their information (if not old enough to be interviewed) in Waves 4, 4.5 and 5.

The "single-wave" weight file for the Wave 4 Cohort contains weights for all Wave 5.5 interview respondents.

Dataset 2401 (DS2401) contains the Wave 5.5 State Identifier data for Adults and has 5 variables and 3,628 cases. Dataset 2402 (DS2402) contains the Wave 5.5 State Identifier data for Youth and Parents and has 5 variables and 7,129 cases. The same 5.5 variables are in each State Identifier dataset, including PERSONID for linking the State Identifier to the questionnaire and biomarker data and 3 variables designating the state (state FIPS, state abbreviation, and full name of the state). The State Identifier values in these datasets represent participants' state of residence at the time of Wave 5.5.

Dataset 2503 (DS2503) contains data derived from responses to questionnaires in Wave 1, Wave 2, Wave 3, Wave 4, Wave 4.5, Wave 5, and Wave 5.5 indicating if participants had ever/never used various tobacco products as of the Wave 5.5 data collection period. This data file contains 26 variables for all 67,276 study participants as of the Wave 5.5 data collection. This file is provided for reference only to simplify the definitions of tobacco use variables in the Adult and Youth data files for subsequent waves.

Dataset 3001 (DS3001) contains the data from PATH-ATS. This file contains 977 variables and 8,874 cases, all of which are continuing adults having completed a prior Adult Questionnaire, with their most recent interview in Wave 5.

Datasets 3111 and 3121 (DS3111 and DS3121) are data files comprising weights for PATH-ATS. In PATH-ATS, weight variables are in individual files corresponding to the Wave 1 and Wave 4 Cohorts.

The "all-waves" weight file for the Wave 1 Cohort contains weights for participants who completed an interview in PATH_-ATS and completed interviews in Waves 1, 2, 3, 4, and 5. The "all-waves" weight file for the Wave 4 Cohort contains weights for participants who completed an interview in PATH-ATS; all PATH-ATS respondents completed interviews in Wave 4 and Wave 5.

Dataset 3401 (DS3401) contains the PATH-ATS State Identifier data and has 5 variables and 8,874 cases. The State Identifier dataset includes PERSONID for linking the State Identifier to the questionnaire and biomarker data and 3 variables designating the state (state FIPS, state abbreviation, and full name of the state). The State Identifier values in this dataset represents participants' state of residence at the time of PATH-ATS.

Dataset 4001 (DS4001) contains the data from the Wave 7.5 Adult Questionnaire. This file contains 3,142 variables and 7,961 cases. Of these cases, 5,952 are continuing adults having completed a prior Adult Questionnaire. The other 2,009 cases are "aged-up adults" having previously completed a Youth Questionnaire.

Dataset 4002 (DS4002) contains the data from the Wave 7.5 Youth and Parent Questionnaire. This file contains 2,169 variables and 8,949 cases. Of these cases, 7,064 are continuing youth having completed a prior Youth Interview. The other 1,885 cases are "aged-up youth" having previously been sampled as "shadow youth."

Datasets 4111, 4112, 4121, 4122, 4221, 4222, 4231, and 4232 (DS4111, DS4112, DS4121, DS4122, DS4221, DS4222, DS4231, and DS4232) are data files comprising the weight variables for Wave 7.5. In Wave 7.5, the weight variables are in individual data files corresponding to the Wave 1, Wave 4, and Wave 7 Cohorts and different weight types.

There are two separate sets of files with "all-waves" weights: one for the Wave 1 Cohort and one for the Wave 4 Cohort. The "all-waves" weight file for the Wave 1 Cohort contains weights for participants who completed a Wave 7.5 interview and completed interviews (if old enough to do so) or verified their information (if not old enough to be interviewed) in Waves 1, 2, 3, 4, 4.5, 5, 5.5, 6, and 7. The "all-waves" weight file for the Wave 4 Cohort contains weights for participants who completed a Wave 7.5 interview and completed interviews (if old enough to do so) or verified their information (if not old enough to be interviewed) in Waves 4, 4.5, 5, 5.5, 6, and 7.

There are two separate sets of files with "single-waves" weights: one for the Wave 4 Cohort and one for the Wave 7 Cohort. The "single-wave" weight file for the Wave 4 Cohort contains weights for Wave 7.5 interview respondents in the Wave 4 Cohort, regardless of their response status at Waves 4.5, 5, 5.5, 6, or 7. The "single-wave" weight file for the Wave 7 Cohort contains weights for all Wave 7.5 interview respondents in the Wave 7 Cohort.

Dataset 4401 (DS4401) contains the Wave 7.5 State Identifier data for Adults and has 5 variables and 7,961 cases. Dataset 4402 (DS4402) contains the Wave 7.5 State Identifier data for Youth and Parents and has 5 variables and 8,949 cases. The same 7.5 variables are in each State Identifier dataset, including PERSONID for linking the State Identifier to the questionnaire and biomarker data and 3 variables designating the state (state FIPS, state abbreviation, and full name of the state). The State Identifier values in these datasets represent participants' state of residence at the time of Wave 7.5.

Dataset 4503 (DS4503) contains data derived from responses to questionnaires in Wave 1, Wave 2, Wave 3, Wave 4, Wave 4.5, Wave 5, Wave 5.5, PATH-ATS, Wave 6, Wave 7, and Wave 7.5 indicating if participants had ever/never used various tobacco products as of the Wave 7.5 data collection period. This data file contains 25 variables for all 82,139 study participants as of the Wave 7.5 data collection. This file is provided for reference only to simplify the definitions of tobacco use variables in the Adult and Youth data files for subsequent waves.

Dataset 4601 (DS4601) contains the Tobacco Universal Product Code (UPC) data from Wave 7.5. This data file contains 53 variables and 157 cases. This file contains UPC values on the packages of tobacco products used or in the possession of adult respondents at the time of Wave 7.5. The UPC values can be used to identify and validate the specific products used by respondents and augment the analyses of the characteristics of tobacco products used by these respondents at the time of Wave 7.5.