Data user guide

The Longitudinal Study of Australian Children: An Australian Government Initiative
Data User Guide – August 2018

Appendix: LSAC variable naming conventions

This is a help sheet for data users.

Standard input variables

attnnsxx
a tt nn s xx
Child age Topic Arbitrary number within topic Subject/informant (optional) Sub-numbering
Values
a = 0-1 years
b = 2-3 years
c = 4-5 years
d = 6-7 years
(e = 8-9 years) etc
z = does not change with age of child
(examples)
fd = family demographics
hs = health status
se = social and emotional outcomes

eg
01
02
03
04
etc

a = parent 1
b = parent 2
c = study child
p = PLE
m = mother
f = father
t = teacher/carer
i = between waves respondent
As required for grouping of like items. See examples below.
      OR  
     

Education/childcare items
- see User Manual for values

 

Examples:

  • bhs13a = (b) 2-3 year old child; (hs) health status topic; (13) rating of own health status; (a) P1 is respondent
  • bhs23c1, bhs23c2, bhs23c3 = 2-3 year old child's height, weight, girth
  • cse03a4a, cse03a4b = 4-5 year old child, se topic SDQ, reported by P1, 2 of the conduct subscale items

Derived items

asm
a s m
Child age (optional)
Subject/informant
Up to 6-character mnemonic
As above As above e.g. vocab = MCDI vocabulary measure score

Example:

  • aaemp = P1 employment status when child aged 0-1 years
  • bbemp = P2 employment status when child aged 2-3 years

Household composition variables

aFnnxmmm
a F nn x mmm
Child age Same letter in all variables ('f' for family) Arbitrary number within topic Sub-question indicator

(optional)

Person
Values

a = 0-1 years
b = 2-3 years
c = 4-5 years
d = 6-7 years
(e = 8-9 years) etc.

z = does not change with age of child

f E.g.
01
02
03
04
etc.
E.g.
a
b
c
d
etc.
mnn
m1 = study child
m2 = W1 P1
m3 = W1 P2
m4-15 = other hh members
t1-6 = temporary hh members
        OR
        cpp
c = child's age

and pp is
m = mother
f = father
p1 = P1
p2 = P2

Examples:

  • zf02m1 = gender (zf02) of study child (m1)
  • bf01m2 = whether the W1 P1 (m2) is present (f01) when study child is aged 2-3 years (b)
  • af08am = relationship to study child (f08) of mother (m) when child aged 0-1 years (a)
  • df01cp1 = whether P1 (p1) when child aged 4-5 years (c) is present (f01) when child was 6-7 years (d)

Parent identifier variables

These take values of 1-15 or missing.

apMN
a p MN
Child age Parent Same letters in all variables
As above m = mother
f = father
p1 = P1
p2 = P2
mn

Examples:

  • ammn = member number (mn) for mother (m) when child aged 0-1 years (a)
  • bp1mn = member number for P1 when child aged 2-3 years