Quebec Newborn Twin Study
The goals of the Quebec Newborn Twin Study (QNTS) are to document individual differences in the cognitive, behavioral, social-emotional aspects of developmental health across childhood, their early biosocial, i.e., genetic and environmental, determinants, as well as their putative role in later social-emotional adjustment, school and health outcomes.
Overview
- Acronym
- QNTS
- Website
- QNTS
- Investigators
-
- Contacts
-
General Design
- Study design
- Cohort
- Start - End Year
- 1995 -
- General Information on Follow Up (profile, frequency)
-
Participants were assessed 16 times; at 5, 20, 32, 50 and 60 months, in kindergarten, 100 months, grade 1, 3, 4 and 6, in secondary 1, 2, 3 and 5, and at 19 years of age.
- Recruitment Target
-
- Families
- Number of Participants
- 1,410
- Number of Participants with Biological Samples
- 1,043
- Supplementary information about number of participants
-
Families: 705 (662 recruited at 5 months and 43 recruited during High School)
Biological samples: 562 twins and 481 parents
Access
Availability of data and biosamples
| Possible Access to Data | |
| Possible Access to Biosamples | |
| Other |
|
- By contacting the study representative: Data Management Coordinator Qian Xu (Universite de Montreal - CHU Sainte-Justine)
Sector of research
| Possible Access to Data | Possible Access to Biosamples | |
| Investigators from the public sector | ||
| Investigators from the private sector | ||
| Investigators from not-for-profit organization |
Transfer
| Possible Access to Data | Possible Access to Biosamples | |
| Can leave the study facility | ||
| Can leave the country |
coding
Cost
| Possible Access to Data | Variable Cost |
| Possible Access to Biosamples | Not yet defined |
Cost reduction for co-analyses
| Possible Access to Data | |
| Possible Access to Biosamples |
More information regarding data access is available on our website : http://www.gripinfo.ca/grip/public/www/Etudes/en/dadprocedures.asp
Marker Papers
Boivin M, Brendgen M, Dionne G, Dubois L, Pérusse D, Robaey P, Tremblay RE, Vitaro F. 2013. The Quebec Newborn Twin Study into adolescence: 15 years later; 16(1): 64-9.
PUBMED 23200437Timeline
Population
QNTS - Twins born between 1995-1998
The population is composed of twins born between 1995 and 1998 in the greater Montreal area and their parents.
Selection Criteria
- Twins
- Countries
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- Canada
- Canadian Provinces
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- Quebec
- Territory
- Greater Montreal area
Sources of Recruitment
- General Population
-
- Selected sample
- Supplementary Information
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Recruitment began using the Quebec Newborn Twin Registry to identify all twin births in Quebec between April 1995 and December 1998. Names, addresses, and phone numbers of all the mothers of newborn twins were collected from the computerized birth records of the Quebec Bureau of Statistics.
Sample Size
- Number of Participants
- 1,410
- Number of Participants with Biological Samples
- 1,043
- Supplementary Information about selection criteria
-
5 months: 662 families
18 months: 566 families
30 months: 524 families
48 months: 442 families
60 months: 446 families
Kindergarten: 402 families
Grade 1: 476 families
100 months: 375 families (Genotyping), 150 pairs (Neuropsychological assessments)
Grade 3: 393 families
Grade 4: 444 families
Grade 6: 406 families
Secondary 1: 410 families
Secondary 2: 404 families
Secondary 3: 403 families
Secondary 5: 381 familiesBiological samples: 562 twins and 481 parents
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | QNTS - 5 months |
|
|
1996 (June) | 1998 (November) |
| 1 | QNTS - 18 months |
|
|
1997 (July) | 2000 (January) |
| 2 | QNTS - 30 months |
|
1998 (July) | 2001 (January) | |
| 3 | QNTS - 48 months |
|
2000 (January) | 2002 (July) | |
| 4 | QNTS - 60 months |
|
|
2001 (June) | 2003 (August) |
| 5 | QNTS - Kindergarten |
|
|
2001 (September) | 2004 (June) |
| 6 | QNTS - Grade 1 |
|
2002 (September) | 2005 (June) | |
| 7 | QNTS - 100 months |
|
|
2004 (April) | 2006 (April) |
| 8 | QNTS - Grade 3 |
|
2004 (September) | 2007 (June) | |
| 9 | QNTS - Grade 4 |
|
2005 (September) | 2008 (June) | |
| 10 | QNTS - Grade 6 |
|
2007 (September) | 2010 (June) | |
| 11 | QNTS - Secondary 1 |
|
2008 (September) | 2011 (June) | |
| 12 | QNTS - Secondary 2 |
|
|
2009 (September) | 2012 (June) |
| 13 | QNTS - Secondary 3 |
|
2010 (September) | 2013 (June) | |
| 14 | QNTS - Secondary 5 |
|
2012 (September) | 2015 (June) | |
| 15 | QNTS - 19 years |
|
|
2016 (May) | 2018 (February) |
Participating Studies
| Acronym | Name | Study design | Countries |
|---|
Harmonization Initiatives Included
| Acronym | Name |
|---|
Datasets
| Name | Data Collection Events | Variables |
|---|
Areas of Information Collected
- Socio-demographic and economic characteristics
- Death
- Lifestyle and behaviours
- Physical measures and assessments
- Birth, pregnancy and reproductive health history
- Laboratory measures
- Perception of health, quality of life, development and functional limitations
- Cognition, personality and psychological measures and assessments
- Diseases
- Life events, life plans, beliefs and values
- Symptoms and signs
- Preschool, school and work life
- Medication and supplements
- Social environment and relationships
- Non-pharmacological interventions
- Physical environment
- Health and community care services utilization
- Administrative information
Variables Content Summary
Areas of Information Collected
No Areas of Information Collected
No Scales Collected
Areas of Information Collected per per Population and Data Collection Event
No Areas of Information Collected
No Scales Collected
Networks
| Acronym | Name | Harmonization Initiatives | Individual Studies |
|---|
Last Update: 2023-09-29T01:42:00.141