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National Longitudinal Study of Adolescent Health ICPSR

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Title: National Longitudinal Study of Adolescent Health ICPSR


1
National Longitudinal Study of Adolescent Health
_at_ ICPSR
  • Felicia LeClere
  • Russ Hathaway
  • With help from the faculty and staff at Carolina
    Population Center, University of North Carolina

2
National Longitudinal Study of Adolescent Health
  • On-going study of the developmental and health
    trajectories of a nationally-representative
    sample of 20,000 adolescents
  • Initiated in 1994 in response to a congressional
    mandate to fund a study of adolescent health
  • Funded by the National Institute of Child Health
    and Human Development (NICHD) with co-funding
    from multiple other federal agencies

3
National Longitudinal Study of Adolescent Health
  • Developed and coordinated by researchers at UNCs
    Carolina Population Center
  • PrincipaI Investigator/Director
  • Waves IIII J. Richard Udry
  • Wave IV Kathleen Mullan Harris

4
Sampling Structure of Add Health
School Sampling Frame QED
HS
HS
HS
HS
HS
H
Feeder
Feeder
Feeder
Feeder
Feeder
Sampling Frame of Adolescents and Parents N
100,000 (100 to 4,000 per pair of schools)
Ethnic Samples
High Educ Black
Disabled Sample
Puerto Rican
Saturation Samples from 16 Schools
Chinese
Main Sample 200/Community
Cuban
Genetic Samples
Identical Twins
Full Sibs
Fraternal Twins
Half Sibs
5
Longitudinal Design of Add Health
In-School Administration
In-Home Administration
School Admin 144
Adolescents in grades 7-12 20,745
Wave I 1994-1995 (78.9)
Parent 17,670
Students 90,118
School Admin 128
Wave II 1996 (88.2)
Adolescents in grades 8-12 14,738
Wave III 2001-2002 (77.4)
Young Adults Aged 18-26 15,197
Partners 1,507
Wave IV 2007-08 (80.0)
Adults Aged 24-32 15,500
6
Questionnaire Content Across Waves
  • Waves I, II
  • Demographic
  • Family, siblings, friends
  • Education, work
  • Physical and mental health
  • Daily activities and sleep
  • Relationships
  • Sexual, fertility histories
  • Substance use
  • Delinquency and violence
  • Attitudes, religion
  • Economics, expectations
  • Psychological, personality
  • Wave III
  • Demographic
  • Family, siblings, friends
  • Education, work, military
  • Physical and mental health
  • Daily activities and sleep
  • Relationships
  • Sexual, fertility histories
  • Substance use
  • Involvmt w/criminal justice sys
  • Attitudes, religion
  • Economics, expectations
  • Psychological, personality
  • Children and parenting
  • Civic participation
  • Gambling
  • Mentoring
  • Wave IV
  • Demographic
  • Family, siblings, friends
  • Educ, work, military (records)
  • Physical and mental health
  • Daily activities and sleep
  • Relationships
  • Sexual, fertility histories
  • Substance use and abuse
  • Involvmt w/criminal justice sys
  • religWork attitudes and chars,
  • Economics, expectations
  • Big 5 Personality, stressors
  • Children and parenting
  • Civic participation
  • Psychosocial factors
  • Cognitive function

7
Biological Data Collection Across Waves
8
Wave IV Locate and Interview Rates
  • Data collection ended in January 2009
  • Located 92 of sample members
  • Interviewed 80 of eligible cases
  • Wave IV sample size approximately 15,600

9
Wave IV Biospecimen Participate Rates
  • 96 of respondents consented to provide saliva
    for DNA
  • 94 consented to provide blood spots
  • For each specimen, 81 of those consenting to
    collection also consented to archiving
  • Approximately 12,200 DNA samples available for
    further testing

10
Accessing Add Health Data
  • Add Health data are available in two formsa
    public-use data set and a restricted-use
    contractual data set
  • Public-use data available from
  • Inter-University Consortium for Political and
    Social Research (ICPSR)
  • Sociometrics
  • Instructions available on the Add Health Web Page

11
Accessing Add Health Data
  • Restricted-use contractual data set
  • Currently available from Carolina Population
    Center
  • Researchers must have an IRB-approved security
    plan
  • In 2010, ICPSR will disseminate both data forms
  • Changes in dissemination procedures
  • Posted on Add Health web page
  • Emailed to Add Health listserv

12
Dissemination Accomplishments
  • Data made available to more than 3,500
    investigators for analyses
  • 300 grants awarded to analyze data
  • 1,000 peer-reviewed publications
  • Over 200 dissertations and masters theses using
    Add Health

13
Add Health Web Page
  • Online code books
  • Manuscripts to inform data analysis
  • Bibliography of Add Health publications
  • Information about the bi-annual Add Health Users
    Conference in Washington DC
  • Downloadable application/contract and
    instructions for data requests

14
(No Transcript)
15
Add Health _at_ICPSR
  • Distributed through Data Sharing for Demographic
    Research (cooperative agreement funded by NICHD)
  • Free to the public with a MyData account
  • Download public use directly from website
  • Free user support at netmail_at_icpsr.umich.edu or
    dsdr_at_icpsr.umich.edu

16
DSDR Add Health Data
  • Current holdings include Waves I-III Public Use
    Files in SAS, STATA, SPSS format
  • On-line analysis capability for all Public Use
    Files
  • Original questionnaires and searchable PDF
    documentation
  • Updated bibliographic citations with full text
    where available

17
Data available
  • Waves I and II
  • Public Use Respondent files
  • Sample Weight files
  • Contextual files

18
Data Available
  • Wave III
  • Public Use Data by Sections
  • Peabody Picture Vocabulary Test Data
  • Education Data
  • Graduation Data
  • Network Variables Data
  • Grand Sample, Education, School, and Graduation
    Weights

19
Add Health Documentation
  • DSDR Codebooks
  • Value and Variable Labels
  • Question Text
  • Add Health Documentation
  • Add Health Codebooks
  • Questionnaires
  • User Guides
  • Related Literature and Literature Search

20
Add Health Online Data Analysis
  • Wave I Public Use Data
  • Wave II Public Use Data
  • Wave III
  • Peabody Picture Vocabulary Test Data
  • Public Use Data (and by Section)
  • Public Use Education Data
  • Public Use Graduation Data
  • Unweighted

21
Add Health Online Analysis
  • Powered by SDA
  • Allow users to conduct searches and on-line
    analysis as well as generate extracts
  • Extracts available in SAS, SPSS, STATA with
    custom codebooks
  • Cannot link across datasets

22
Coming in January 2010
  • Wave IV public use data
  • Restricted use data from all waves through
    on-line contracting system
  • New Add health page _at_ DSDR
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