Monitoring the Future: A Continuing Study of American Youth (8th- and 10th-Grade Surveys), 1991 (ICPSR 2521)
Alternate Title: MTF 1991 (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, University of Michigan. Institute for Social Research. Survey Research Center
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 two questionnaires, each with a different subset of topical questions but containing a set of "core" questions on demographics and drug use. There are about 300 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, and injection drugs such as heroin.
These data are freely available.
Johnston, Lloyd D., Jerald G. Bachman, Patrick M. O'Malley, and John Schulenberg. Monitoring the Future: A Continuing Study of American Youth (8th- and 10th-Grade Surveys), 1991. ICPSR02521-v2. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2008-01-30. http://doi.org/10.3886/ICPSR02521.v2
Persistent URL: http://doi.org/10.3886/ICPSR02521.v2
This study was funded by:
- United States Department of Health and Human Services. National Institutes of Health. National Institute on Drug Abuse (DA01411-16)
Scope of Study
Subject Terms: alcohol, adolescents, attitudes, crime, demographic characteristics, drug education, drug use, family life, gender roles, high school students, junior high school students, lifestyles, social behavior, social change, tobacco use, values, youths
Geographic Coverage: United States
Date of Collection:
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.
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. Separate samples were drawn for each grade. Of the 80 PSUs, 8 were selected with certainty and 72 were selected with probability proportionate to size based on the size of the 8th- (or 10th-) grade class in each school. In schools with more than 400 8th (or 10th) graders, a random sample of students or classes was drawn. In schools with less than 400 8th (or 10th) graders, all students were asked to participate. Each sampled 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 15 8th graders were excluded from the sample. For the 10th-grade survey, schools with less than 25 10th graders were excluded.
Weight: Each of the four 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.
Mode of Data Collection: self-administered questionnaires
Response Rates: The participation rate among schools has been between 66 and 80 percent since the inception of the study. The student response rates for the 1991 8th- and 10th-grade surveys were 90 percent and 87 percent, respectively.
- Performed recodes and/or calculated derived variables.
- Checked for undocumented or out-of-range codes.
Original ICPSR Release: 1999-11-02
- 2008-01-30 The data are now provided in additional file formats, including one or more of the following: Stata setup, SAS transport (CPORT), SPSS system, Stata system, SAS supplemental syntax, and Stata supplemental syntax files, and tab-delimited ASCII data file. Variables that had been omitted by the PI for confidentiality reasons were deleted. Also, incorrect question text was fixed.
- 2005-11-04 On 2005-03-14 new files were added to one or more datasets. These files included additional setup files as well as one or more of the following: SAS program, SAS transport, SPSS portable, and Stata system files. The metadata record was revised 2005-11-04 to reflect these additions.
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