Quebec Newborn Twin Study (QNTS)
QNTS follows a birth cohort of over 1,300 twins born between April 1995 and December 1998 in the Greater Montreal area, Québec, Canada. Twin births within this time period were identified using the Québec Newborn Twin Registry, with mothers subsequently contacted through information held by the Québec Bureau of Statistics. Twins have been assessed at 16 time points across childhood and adolescence, with the latest data collection occurring at age 19. Multiple informants have provided information throughout the study, including the twins, parents, and teachers.
Study design
Cohort - birth, Cohort - twin
Number of participants at first data collection
1,324 (twins)
662 (families)
Age at first data collection
6 months (twins)
Varied (families)
Participant year of birth
1995 - 1998 (twins)
Varied (families)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1995
Primary Institutions
Laval University (Université Laval)
Profile paper DOI
Funders
Social Sciences and Humanities Research Council (SSHRC)
Canadian Institutes of Health Research (CIHR, Instituts de recherche en santé du Canada, IRSC)
National Health Research Development Program (NHRDP)
Quebec Fund for Research on Society and Culture (Fonds Québécois de la Recherche sur la Société et la Culture, FQRSC)
Research Fund in Quebec Health (Fonds de la Recherche en Santé du Québec, FRSQ)
Ongoing?
Yes
Data types collected
- Activity log (e.g. food, sleep, exercise)
- Computer, paper or task testing (e.g. cognitive testing, theory of mind doll task, attention computer tasks)
- Interview – face-to-face
- Interview – online
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Secondary data
- Self-report questionnaire – online
- Self-report questionnaire – paper or computer assisted
- Ethnography or participant observation
- Electroencephalography (EEG)
- Healthcare data
- Medical birth registry
Engagement
Keywords
Consortia and dataset groups
