Healthy Twin Study (HT)

Sample details

HT is a multi-center cohort study of twins from the Korean Twin-Family Register, a nation-wide twin and family database. The cohort comprises same-sex twins over the age of 30 and their adult family members. The study started in 2005-2006 with approximately 170 twin pairs and their family members, and expanded to recruit more participants. All participants have been invited to complete a full health examination and questionnaire survey every three years.

Study design
Cohort - open, Cohort - twin, Biobank

Number of participants at first data collection

482 (family members)

338 (twins)

Recruitment is ongoing

Age at first data collection

≥ 30 years (twins)

≥ 20 years (family members)

Participant year of birth

Varied (twins)

Varied (family members)

Participant sex
All

Representative sample at baseline?
No

Sample features

Dizygotic and monozygotic twins

Families

Dataset details

Country

South Korea

Year of first data collection

2005

Primary Institutions

Seoul National University (서울대학교, SNU)

Links

twinkorea.org/en.jsp

doi.org/10.1375/183242706779462822

Profile paper DOI

doi.org/10.1017/thg.2012.130

Funders

Korea National Institute of Health

National Genomic Research Institute of the Center for Disease Control (NGRI)

National Research Foundation of Korea (NRF)

Ongoing?
Yes

Data types collected

Quantitative data collection

Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
Self-report questionnaire – online
Self-report questionnaire – paper or computer assisted

Qualitative data collection