The reliability and validity of Bayley-III cognitive scale in China's male and female children

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Hua, J., Li, Y., Ye, K., Ma, Y., Lin, S., Gu, G. and Du, W. ORCID: 0000-0002-5115-7214, 2019. The reliability and validity of Bayley-III cognitive scale in China's male and female children. Early Human Development, 129, pp. 71-78. ISSN 0378-3782

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Official URL: http://doi.org/10.1016/j.earlhumdev.2019.01.017

Abstract

Background: Since publication in 2006, the Bayley-III scale has been used widely in pediatric populations worldwide; however, there have been very few studies which examined the usefulness and the potential sex differences in a Chinese context.

Aims: To assess the reliability and validity of the Bayley-III cognitive scale, and detect possible sex differences in term children so as to provide evidence for clinical and research use in China.

Study design: Cross-sectional study.

Participants and outcome measures: Of the 1589 children from 3 healthcare institutions that were initially recruited, a total of 1444 children were included in the final analysis. We randomly selected 5-10% children from the total sample to evaluate the test–retest, inter-rater and criteria-related reliability in order to meet the psychometric criteria of Bayley-III scale. Inter-item consistency, test-retest and inter-rater reliability of the scale were estimated using Split-half method and Intra-class Correlation Coefficient (ICC). The content validity was evaluated by the Item-level Content Validity Index (I-CVI). The Mann-Kendall trend test was performed to assess trends of cognitive development, and post-hos Least Significant Difference test was used to detect age-appropriateness of items.

Results: Six developmental pediatricians were trained to administer the Bayley-III cognitive scale. Inter-item consistency (n=1444) with Guttman split-half coefficient was above 0.8, while test-retest (n=144) and inter-rater reliability (n=74) had good to excellent ICCs of over 0.9. The criteria-related validity (n=74) of Bayley-III was acceptable, and associations with Gesell Developmental Schedules (GDS) were mainly above 0.8. The raw score of Bayley-III scale in total subjects (n=1444) showed an increased trend across all months of age (p<0.05), and only the score in age group of 35M16D to 36M15D declined in females (p<0.05, n=722). Female children presented a higher score than male children in all subjects and in the 18–23 months age group (p< 0.05).

Conclusions: Our findings provide important evidence that the Bayley-III cognitive scale ia valid measurement which could be used in Chinese population, as well as the consideration of sex differences when used in a Chinese context.

Item Type:

Journal article

Publication Title:

Early Human Development

Creators:

Hua, J., Li, Y., Ye, K., Ma, Y., Lin, S., Gu, G. and Du, W.

Publisher:

Elsevier

Date:

February 2019

Volume:

129