Year 2004 2006 2008 2010 2012 2014 2015 2016
Wave 1 2 3 4 5 6 CheckPoint 7
Age 3-19 months 2-3 years 4-5 years 6-7 years 8-9 years 10-11 years 11-12 years 12-13 years
Saliva Child: 1452
Parent: 1455
Cheek swab/saliva sample
(take home kit for non-attending birth parents)
Parent: 976
Cheek swab/saliva sample
(child and attending parent for home
(instead of clinic) visit
 participants)
Child: 267
Parent: 263
Venous blood Child: 1183
Parent: 1165
Finger prick (if refused venous blood) Child: 244
Parent: 267
Urine Child: 1529
Parent: 1614
Hair Child: 1380
Parent: 1426
Toenails Child: 1459

Legend

A = Administration report abstraction
C = Index child report (reporting on others)
L = Linkage (to other databases)
M = Medical records data abstraction
O = Observation/direct assessment
N = Nurse report
P = Parent/primary caregiver report
Pe = Peer report
S = Self report
T = Teacher report
X = Undefined
X BF = Pertaining to biological father
X BM = Pertaining to biological mother
C = Pertaining to index child
X F = Pertaining to father
X Fam = Pertaining to family
X G = Pertaining to grandparent(s)
X M = Pertaining to mother
X P = Pertaining to parent(s)
X Pa = Pertaining to partner
X Pe = Pertaining to peers
X Pr = Pertaining to primary caregiver
X Si = Pertaining to sibling(s)