Wave W1 W2 W3 W4 W5 W6
Age Trimester 1 Trimester 2 Trimester 3 Birth 8 weeks postnatal 12 months
Year 2009-2013 2009-2013 2009-2013 2009-2013 2009-2013 2010-2014
Age S:SDV M Pa C
Education level S:SDV
Ethnicity S:SDV
Income/finance S:SDV S:SDV S:SDV S:SDV S:SDV
Living arrangements/household composition S:SDV M Pa S:SDV M Pa
Children S:SDV M Pa
Marital status S:SDV S:SDV S:SDV
Residential area S:SDV S:SDV S:SDV S:SDV S:SDV
Sex Pa P:SDV
Biological relationship to child (this pregnancy) S:SDV Pa


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)