Auckland Birthweight Collaborative (ABC)
The ABC Study is a longitudinal case-control study examining risk factors for small for gestational age (SGA) infants in a cohort of 1,714 infants born between October 1995 and November 1997 in Auckland, New Zealand. All small for gestational age (SGA) infants, and a random sample of appropriate for gestational age (AGA) infants were recruited at birth, such that the number in each group was approximately equal. Preterm infants (< 37 completed weeks of gestation), multiple births and those with congenital abnormalities were excluded. The children were followed up with a postal questionnaire at age 1 and with face-to-face assessments at ages 3.5, 7, 11, and 16.
Study design
Cohort - primary caregiver and child, Cohort - birth
Number of participants at first data collection
1,714 (children)
1,714 (mothers)
Age at first data collection
Birth (children)
Varied (mothers)
Participant year of birth
1995 - 1997 (children)
Varied (mothers)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1995
Primary Institutions
University of Auckland
Profile paper DOI
Funders
Auckland Medical Research Foundation
Becroft Foundation
Hawkes Bay Medical Research Foundation
Health Research Council of New Zealand (HRC)
National Child Health Research Foundation
Ongoing?
No
Data types collected
- Computer, paper or task testing (e.g. cognitive testing, theory of mind doll task, attention computer tasks)
- Interview – face-to-face
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Secondary data
- Wearable devices
- Self-completed questionnaire – paper or computer assisted
- None
- None
- Healthcare data
- Medical birth registry
Engagement
Keywords
