2001 Cohort of the Longitudinal Survey of Newborns in the 21st Century
The 2001 Cohort of the Longitudinal Survey of Newborns in the 21st Century is a nationally representative study of 47,015 infants born in Japan. The baseline sample comprises 51.9% males and 48.1% females, including 1,037 twins and 29 triplets. The study collects data on various socio-demographic factors and follows the children annually to track their growth and development, providing insights into child development in Japan.
Study design
Cohort - birth
Number of participants at first data collection
47,015 (participants)
Age at first data collection
6 months (participants)
Participant year of birth
2001 (participants)
Participant sex
All
Representative sample at baseline?
The Japanese population, across all socio-demographic levels.
Sample features
Country
Year of first data collection
2001
Primary Institutions
Ministry of Health, Labour and Welfare (厚生労働省, MHLW)
Profile paper DOI
Funders
Ministry of Health, Labor and Welfare (厚生労働省, MHLW)
Ongoing?
Yes
Data types collected
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Secondary data
- Self-report questionnaire – paper or computer assisted
- None
- None
- Medical birth registry
- Mortality data
Engagement
Keywords
