Year 2007-2010 2011-2014 2011-2014 2013-2016 2013-2016 2016-2020 2016-2020 2020 2021
Age ~ 12 months of age 4 years 4 years 6 years 6 years 10 years 10 years 10-14 yrs 11-15 yrs
Wave 1 2(a) 2(b) 3(a) 3(b) 4(a) 4(b) COVID Immune wave:
Baseline
COVID Immune wave:
12 mth follow-up
Venous blood Child: 870 Child: 232   Child: 468   Child: 403 Child: TBD Child: TBD
Saliva/buccal   Child: 525   Child: 1237   Child: 2155
Faeces Child: 42        
Dried blood spot
(Guthrie card, from blood sample)1
Child: 948 Child: 221 Child: 1237 Child: 1203 Child: TBD Child: TBD

Notes

(a) – data collected for whole sample
(b) – additional data collected for clinic/food challenge subsample

1 Dried blood spots were created from finger prick samples (if venous blood collection was refused)

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)