Alternate Title:  MTF 2004 (8th/10th Grade)

Principal Investigator(s): 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

Summary: 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 amphet... (more info)

Series: Monitoring the Future (MTF) Series

• This data is freely available.

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), 2004. ICPSR04263-v2. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2010-02-24. doi:10.3886/ICPSR04263.v2

Persistent URL: http://dx.doi.org/10.3886/ICPSR04263.v2

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This survey was funded by:

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

Summary:   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, tobacco, alcohol, inhalants, steroids, marijuana, hashish, LSD, hallucinogens, cocaine, crack, ecstasy, methamphetamine, and injection drugs such as heroin.

Subject Terms:   alcohol, attitudes, crime, demographic characteristics, drug education, drug use, family background, gender roles, high school students, human behavior, lifestyles, religious attitudes, self esteem, social change, tobacco use, values, youths

Geographic Coverage:   United States

Time Period:  

• 2004

Date of Collection:  

• 2004

Unit of Observation:   individual

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

Data Types:   survey data

Data Collection Notes:

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 question location and the second is sorted by subject area.

Sample:   Multistage area probability sample design 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 is 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.

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

Mode of Data Collection:   on-site questionnaire

Response Rates:   The student response rates for the 2004 8th- and 10th-grade surveys were 89 percent and 88 percent, respectively.

Extent of Processing:  ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR 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, ICPSR 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.

Original ICPSR Release:  2005-10-26

Version History:

• 2010-02-24 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.
• 2005-12-15 A user guide that includes a cross-time question index that is relevant to all eight parts has been added.

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