Evaluation of the INTERGROWTH-21st Neurodevelopment Assessment (INTER-NDA) in 2 year-old children

Authors

Elizabeth Murray, Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, United Kingdom,
Michelle Fernandes, 3 Oxford Maternal & Perinatal Health Institute, Green Templeton College, University of Oxford, Oxford, United Kingdom
Charles RJ Newton, Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, United Kingdom
Amina Abubakar, Aga Khan UniversityFollow
Stephen H Kennedy, Oxford Maternal & Perinatal Health Institute, Green Templeton College, University of Oxford, Oxford, United Kingdom
Jose Villar, Oxford Maternal & Perinatal Health Institute, Green Templeton College, University of Oxford, Oxford, United Kingdom
Alan Stein, Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, United Kingdom

Document Type

Article

Department

Institute for Human Development

Abstract

Abstract: Background The INTER-NDA is a novel assessment of early child development measuring cognition, language, motor skills, behaviour, attention, and socio-emotional reactivity in 2 year olds in 15 minutes. Here, we present the results of an evaluation of the INTER-NDA against the Bayley Scales of Infant Development III edition (BSID-III), its sensitivity and specificity and its psychometric properties.

Methods Eighty-one infants from Oxford, UK, aged 23.1–28.3 months, were evaluated using the INTER-NDA and the BSID-III. The agreement between the INTER-NDA and the BSID-III was assessed using interclass correlations (for absolute agreement), Bland-Altman analyses (for bias and limits of agreement), and sensitivity and specificity analyses (for accuracy). The internal consistency of the INTER-NDA and uni-dimensionality of its subscales were also determined.

Results The interclass correlation coefficients between the BSID-III and the INTER-NDA cognitive, motor and behaviour scores ranged between 0.745 and 0.883 (p<0.001). The Bland-Altman analysis showed little to no bias in the aforementioned subscales. The sensitivity and specificity of INTER-NDA cognitive scores ≤1 SD below the mean are 66.7% and 98.6% respectively, with moderate agreement between INTER-NDA and BSID-III classifications (κ = 0.72, p<0.001). The sensitivity and specificity of INTER-NDA scores <2 SD below the mean, in predicting low BSID-III scores (<70), are 100% each for cognition, and 25% and 100% respectively for language. More than 97% of children who scored in the normal range of the INTER-NDA (<1SD below mean) also scored in the normal range in the BSID-III (≥85). The INTER-NDA demonstrates satisfactory internal consistency and its subscales demonstrate good unidimensionality.

Conclusion The INTER-NDA shows good agreement with the BSID-III, and demonstrates satisfactory psychometric properties, for the assessment of ECD at 22–28 months.

Comments

This work was published before the author joined Aga Khan University.

Publication (Name of Journal)

PLoS One

Recommended Citation

Murray, E., Fernandes, M., Newton, C., Abubakar, A., Kennedy, S., Villar, J., Stein, A. (2018). Evaluation of the INTERGROWTH-21st Neurodevelopment Assessment (INTER-NDA) in 2 year-old children. PLoS One, 13(2), 1-13.
Available at: https://ecommons.aku.edu/eastafrica_ihd/71