National Longitudinal Study of Adolescent Health (Add Health), 1994-2008: Contextual Data [Restricted Use] (ICPSR 27024)

Version Date: Jun 30, 2014

Principal Investigator(s):
Kathleen Mullan Harris, University of North Carolina-Chapel Hill; J. Richard Udry, University of North Carolina-Chapel Hill

https://doi.org/10.3886/ICPSR27024.v4

Version V4

This version of the data collection is no longer distributed by ICPSR.

Additional information may be available in Collection Notes.

2014-06-30: This study has been deaccessioned and is no longer distributed by ICPSR or DSDR. More information on accessing Add Health restricted-use data can be found on the Add Health website.

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Summary

The National Longitudinal Study of Adolescent Health (Add Health) is a longitudinal study of a nationally representative sample of adolescents in grades 7-12 in the United States during the 1994-1995 school year. The Add Health cohort has been followed into young adulthood with four in-home interviews, the most recent 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, providing unique opportunities to study how social environments and behaviors in adolescence are linked to health and achievement outcomes in young adulthood. The fourth wave of interviews expanded the collection of biological data in Add Health to understand the social, behavioral, and biological linkages in health trajectories as the Add Health cohort ages through adulthood. The files contained in this component of the Add Health restricted data are Waves I-III Contextual Files Data, Waves I-II Neighborhood Data, Wave I Spatial Analysis Data, Waves III-IV Grouping File Data, and Waves III-IV Census Region data. The contextual files data contain community contextual variables based on state, county, tract, and block group levels derived from Waves I, II, and III addresses. The neighborhood data and grouping file data contain pseudo state, county, tract, and block group variables that allow grouping Add Health respondents geographically. Wave I Spatial Analysis Data include X, Y coordinates that can be used to calculate distances between friends in a school community. For more information, please see the study website.

Citation

Harris, Kathleen Mullan, and Udry, J. Richard. National Longitudinal Study of Adolescent Health (Add Health), 1994-2008: Contextual Data [Restricted Use]. Ann Arbor, MI: Carolina Population Center, University of North Carolina-Chapel Hill [distributor], Inter-university Consortium for Political and Social Research [distributor], 2014-06-30. https://doi.org/10.3886/ICPSR27024.v4

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Funding

United States Department of Health and Human Services. National Institutes of Health. Eunice Kennedy Shriver National Institute of Child Health and Human Development (P01-HD31921), United States Department of Health and Human Services. National Institutes of Health. National Cancer Institute, United States Department of Health and Human Services. National Institutes of Health. National Institute on Alcohol Abuse and Alcoholism, United States Department of Health and Human Services. National Institutes of Health. National Institute on Deafness and Other Communication Disorders, United States Department of Health and Human Services. National Institutes of Health. National Institute on Drug Abuse, United States Department of Health and Human Services. National Institutes of Health. National Institute of General Medical Sciences, United States Department of Health and Human Services. National Institutes of Health. National Institute of Mental Health, United States Department of Health and Human Services. National Institutes of Health. National Institute of Nursing Research, United States Department of Health and Human Services. National Institutes of Health. Office of AIDS Research, United States Department of Health and Human Services. National Institutes of Health. Office of Behavioral and Social Sciences Research, United States Department of Health and Human Services. National Institutes of Health. Office of Research on Women's Health, United States Department of Health and Human Services. Office of Public Health and Science. Office of Population Affairs, United States Department of Health and Human Services. Centers for Disease Control and Prevention. National Center for Health Statistics, United States Department of Health and Human Services. Centers for Disease Control and Prevention. Office of Minority Health and Health Disparities, United States Department of Health and Human Services. Office of Public Health and Science. Office of Minority Health, United States Department of Health and Human Services. Office of the Assistant Secretary for Planning and Evaluation, National Science Foundation

Subject Terms

academic achievement   adolescents   alcohol consumption   birth control   classroom environment   dating (social)   drinking behavior   drug use   eating habits   educational environment   families   family planning   family relationships   family structure   friendships   health   health behavior   health care access   health status   household composition   interpersonal relations   living arrangements   marriage   neighborhood characteristics   neighborhoods   parent child relationship   parental attitudes   parental influence   physical characteristics   physical condition   physical fitness   physical limitations   public assistance programs   religious behavior   religious beliefs   reproductive history   school attendance   self concept   self esteem   sexual attitudes   sexual behavior   smoking   social environment   social networks   tobacco use   violence   welfare services

Geographic Coverage

Restrictions

All data in this study are restricted and are available under a Restricted Data Use Agreement.

Distributor(s)

Carolina Population Center, University of North Carolina-Chapel Hill, Inter-university Consortium for Political and Social Research
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Time Period(s)

1994 -- 2008

Date of Collection

1994 -- 2008

Data Collection Notes

  1. 2014-06-30: This study has been deaccessioned and is no longer distributed by ICPSR or DSDR. More information on accessing Add Health restricted-use data can be found on the Add Health website.

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Sample

Wave I, Stage 1 School sample: stratified, random sample of all high schools in the United States. A school was eligible for the sample if it included an 11th grade and had a minimum enrollment of 30 students. A feeder school, a school that sent graduates to the high school and that included a 7th grade, was also recruited from the community. Wave I, Stage 2: An in-home sample of 27,000 adolescents was drawn consisting of a core sample from each community plus selected special over samples. Eligibility for over samples was determined by an adolescent's responses on the In-School Questionnaire. Adolescents could qualify for more than one sample. In addition, parents were asked to complete a questionnaire about family and relationships. The Wave II in-home interview sample is the same as the Wave I in-home interview sample, with a few exceptions. Information about neighborhoods/communities was gathered from a variety of previously published databases. Wave III: The in-home Wave III sample consists of Wave I respondents who could be located and re-interviewed six years later. Wave III also collected High School Transcript Release Forms as well as samples of urine and saliva.

Time Method

Longitudinal

Universe

Adolescents in grades 7-12 and their families.

Unit(s) of Observation

individual

Data Type(s)

Mode of Data Collection

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Original Release Date

2010-01-14

Version History

2018-02-15 The citation of this study may have changed due to the new version control system that has been implemented. The previous citation was:
  • Harris, Kathleen Mullan, and J. Richard Udry. National Longitudinal Study of Adolescent Health (Add Health), 1994-2008: Contextual Data [Restricted Use]. ICPSR27024-v4. Chapel Hill, NC: Carolina Population Center, University of North Carolina-Chapel Hill/Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributors], 2013-04-23. http://doi.org/10.3886/ICPSR27024.v4

2013-08-30 Missing values labels have been added to parts 7 (Wave III Grouping File Data), part 10 (Wave IV Grouping Data), Part 11 (Wave III Supplemental Tract-Level Contextual) and Part 12 (Wave IV Supplemental Tract-Level Contextual). Frequency display has been changed in codebook Part 7 (Wave III Grouping File data). The "Documentation.pdf" file for part 10 (Wave IV Grouping Data)has been uploaded again.

2013-08-15 (1) Part 10 (Wave IV Grouping File Data) was updated to correct an error in the data that erroneously displayed a higher number of valid observations than were actually recorded. The data have not been changed otherwise.

2013-07-23

(1) Part 7 (Wave III Grouping File Data) was updated to correct an error in the data that erroneously displayed a higher number of valid observations than were actually recorded. The data have not been changed otherwise.

(2) The label of variable "W4GROUP0" in Part 10 (Wave IV Grouping File Data) has been changed to "WAVE IV GROUPING VARIABLE CENSUS 2000 FIPS CODE". Also, the word "PSEUDO" was added to the labels of both census grouping variables, as they are not actual FIPS codes but are FIPS-like codes.

(3) In Part 12 (Wave IV Supplemental Tract-Level Contextual Data), the codebook has been updated to include the mover variable description. The changes are textual only, and none of the data has been changed.

2013-04-23 Part 10 (Wave IV Grouping File Data), Part 11 (Wave III Supplemental Tract-Level Contextual Data), and Part 12 (Wave IV Supplemental Tract-Level Contextual Data) were added to the data collection. Additionally, both the original codebook supplied by the principal investigators as well as the ICPSR codebook for all three parts were added.

2012-11-07 The codebook associated with Parts 8 and 9, along with two documentation files that contain the original codebooks supplied by the principal investigators, were made publicly available.

2012-11-01 Parts 8 and 9 were added, and they include Wave III and Wave IV Census Region data, respectively. Documentation files, including ICPSR codebooks and the original codebooks supplied by the principal investigators, were also added for Parts 8 and 9.

2011-02-18 Title, summary, and collection dates were updated to reflect an additional data collection wave in 2008.

2010-05-26 A revised codebook for Part 3 was submitted by the principal investigators.

2010-02-04 Codebooks and documentation were made available for public download.

2010-01-14 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:

  • Performed consistency checks.
  • Standardized missing values.
  • Checked for undocumented or out-of-range codes.
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