Maelstrom Research Staging | WLS_2004

WLS_2004_Sibling

Networks -

Variables -

Population

WLS Sibling sample

In 1977, the population consisted of a randomly selected sibling of the WLS graduate participants. In 1993 a full sibling sample was implemented.

Selection Criteria

Newborns

Twins

Countries

United States of America

Recruitment

Sources of recruitment

Specific population

Specific Population

Other specific population :
Siblings of the graduate sample.

Number of Participants

Number of Participants

6,002

Number of Participants with Biological Samples

3,440

Supplementary Information about selection criteria

The sample frame for siblings for 1975 was a 1/3 random sample of one random living sibling for each graduate with a sibling. The 1993 eligible sibling sample excluded siblings who were in the 1975 sample frame, but were not interviewed; siblings of graduates not interviewed in 1975; and interviews not completed owing to lacking funds. The 2004 eligible siblings sample excluded siblings who were in the 1975 and/or 1993 sample frame, but were not interviewed and siblings of graduates not interviewed in 1975 and 1993.

1975: Mail survey: 2133 participants

1993: Phone and mail survey: 5365 participants

2004: Phone and mail survey: 4703 participants

2011: In-person and mail survey: 3397 participants

More info

Data Collection Event

2004 survey

Telephone and mail surveys. 1993 measures were repeated. It also included:

Network data linking study participants
Volunteering
Internet use
End of life preparations
End of life experiences (death of spouse or parent)
Menstruation, menopause and hysterectomy
Hostility, anger, anxiety
Masculinity scale
Social support and relationships
Marital quality
Health Utility Index (functional measure)
More detailed measures of chronic illnesses than collected in 1993
Cognition-letter/category fluency
Cognition-similarities
Cogntion-word recall
Health care access and utilization
Retrospective childhood health
Retrospective childhood abuse

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Collected Dataset / WLS_2004_Sibling

WLS_2004_Sibling

Population

WLS Sibling sample

Data Collection Event

2004 survey

Files

Variables Classifications