Description & Citation--Study No. 20180

• Bibliographic Description
• Scope of Study
• Methodology
• Access and Availability

Bibliographic Description

20180

Monitoring the Future: A Continuing Study of American Youth (8th- and 10th-Grade Surveys), 2006

MTF 2006 (8th/10th Grade)

Johnston, Lloyd D., University of Michigan. Institute for Social Research. Survey Research Center

Bachman, Jerald G., University of Michigan. Institute for Social Research. Survey Research Center

O'Malley, Patrick M., University of Michigan. Institute for Social Research. Survey Research Center

Schulenberg, John E., University of Michigan. Institute for Social Research. Survey Research Center

United States Department of Health and Human Services. National Institutes of Health. National Institute on Drug Abuse (DA-01411)

Johnston, Lloyd D., Jerald G. Bachman, Patrick M. O'Malley, and John E. Schulenberg. Monitoring the Future: A Continuing Study of American Youth (8th- and 10th-Grade Surveys), 2006. ICPSR20180-v2. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2010-02-11. doi:10.3886/ICPSR20180.v2

Monitoring the Future (MTF) Series

Scope of Study

These surveys of 8th- and 10th-grade students are part of a series that explores changes in important values, behaviors, and lifestyle orientations of contemporary American youth. Students in each grade are randomly assigned to complete one of four questionnaires, each with a different subset of topical questions but containing a set of "core" questions on demographics and drug use. There are more than 450 variables across the questionnaires. Drugs covered by this survey include amphetamines (stimulants), barbiturates (tranquilizers), other prescription drugs, over-the-counter medications, tobacco, smokeless tobacco, alcohol, inhalants, steroids, marijuana, hashish, LSD, hallucinogens, cocaine, crack, ecstasy, methamphetamine, and injectable drugs such as heroin.

alcohol, attitudes, behavior, crime, demographic characteristics, drug education, drug use, educational pursuits, family, gender roles, high school students, lifestyles, prescription medications, religious attitudes, self esteem, social change, tobacco use, values, youth

United States

• 2006

• 2006  (Spring)

individual

Enrolled 8th- and 10th-grade students in the contiguous United States.

survey data

This study was conducted by the Survey Research Center, Institute for Social Research at the University of Michigan.

In 2005, two of the questionnaire forms had a new version of the race question. It included Hispanic as one of the categories in addition to Black and White. For 2006, all four forms have this new version for the race variable.

To protect the anonymity of respondents, all variables that could be used to identify individuals have been collapsed or recoded in the public use files. These modifications should not affect analytic uses of the public use files.

Variables omitted from the Western region questionnaires are noted in each codebook.

A user guide is provided with the study documentation. It contains two year-to-year cross-time question indices for the MTF 8th- and 10th-grade surveys. The first is sorted by subject area and the second is sorted by question location.

Frequency and percentage distributions displayed in the codebooks are unweighted, rather than weighted by variable V5 as they had been in previous years. This change was made to simplify both the production of the codebooks and their interpretation by the analyst.

Methodology

A multistage area probability sample design was used involving three selection stages: (1) geographic areas or primary sampling units (PSUs), (2) schools (or linked groups of schools) within PSUs, and (3) students within sampled schools. Of the 72 PSUs, 8 were selected with certainty, 10 were selected with a probability of .50, and the remainder were selected with probability proportionate to the size of the 8th- or 10th- grade class. In schools with more than 350 students in the grade, a random sample of students or classes was drawn. In schools with less than 350 students in a grade, all students were asked to participate. Each school was asked to participate for two years so that each year one-half of the sample would be replaced. Schools refusing participation were replaced with similar schools in terms of geographic location, size, and type of school (e.g., public, private/Catholic, private/non-Catholic). For the 8th-grade survey, schools with less than 20 8th graders were excluded from the sample. For the 10th-grade survey, schools with less than 25 10th graders were excluded. The participation rate among schools has been between 66 and 80 percent since the inception of the study.

Each of the eight parts contains a weight variable, V5. They were originally varied by school but were modified to protect respondent confidentiality. Users should use the weight variable for all analyses, the results of which will differ slightly from published data tables that used original data.

on-site questionnaire

The student response rates for the 2006 8th- and 10th-grade surveys were 91 percent and 88 percent, respectively.

All archived data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. The archive also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, the archive performed the following processing steps for this data collection:

• Standardized missing values.
• Performed recodes and/or calculated derived variables.
• Checked for undocumented or out-of-range codes.

Access and Availability

Detailed file-level information (such as record length, case count, and variable count) is listed in the file manifest.

2007-10-29

Users are reminded that these data are to be used solely for statistical analysis and reporting of aggregated information and not for the investigation of specific individuals.

• 2010-02-11 Corrected data were provided by the PI for the question asking about binge drinking (item reference number 00850). Other minor corrections were made to the question text and value labels to provide greater consistency between matching variables in other years of data in the series.

• DS1: 8th-Grade Form 1 Data
• DS2: 8th-Grade Form 2 Data
• DS3: 8th-Grade Form 3 Data
• DS4: 8th-Grade Form 4 Data
• DS5: 10th-Grade Form 1 Data
• DS6: 10th-Grade Form 2 Data
• DS7: 10th-Grade Form 3 Data
• DS8: 10th-Grade Form 4 Data