Wave 1 2 2a 3 4 5 6 7 8/11/13 9/12/14 10 15 16
Age baseline
(10-20 weeks gest)
30-32 weeks gest
(index child)
medical records data abstraction 3 months postpartum
(index child)
6 months postpartum
(index child)
9 months postpartum
(index child)
12 months postpartum
(index child)
18 months postpartum
(index child)
6 months postpartum
(2nd/3rd/4th child)
12 months postpartum
(2nd/3rd/4th child)
4 years postpartum
(index child)
10 years postpartum
(index child)
11 years postpartum
(index child)
Communication  P:CCC-2C 1
Language  O:CELF-4C *
Vocabulary  O:NPVTC *
P – parent report (mother reporting on children)
S – self report (mother reporting on herself)
A – medical records data abstraction
O – observation/direct assessment
XC – Pertaining to index child
XM – Pertaining to mother
XF/P – Pertaining to father/partner
XS – Pertaining to sibling

CCC-2: Children’s Communication Checklist – Second Edition
CELF-4: Clinical Evaluation of Language Fundamentals, Fourth Edition
NPVT: National Institutes of Health (NIH) Toolbox Picture Vocabulary Test

1 General language development and pragmatic language development only

* The Centre of Research Excellence in Child Language has developed a language testing app – called the Short-Form Language Measure – composed of NPVT, CNRep and the Recalling Sentences subtest from CELF-4.  The app has been produced subject to third party licences and any interest in using this app must be directed to the CRE-CL (please contact Penny Levickis).  Employees must not share this app without the CRE-CL being aware of, and approving, such uses.  Please note: Maternal Health Study did not use the CNRep portion of the test.