Regional Centre for Child and Youth Mental Health and Child Welfare, NORCE Norwegian Research Centre, Bergen, Norway; Department of Research, Innlandet Hospital Trust, Lillehammer, Norway.
Department of Psychosocial Science, Faculty of Psychology, University of Bergen, Bergen, Norway.
Early Hum Dev. 2022 Jul;170:105610. doi: 10.1016/j.earlhumdev.2022.105610. Epub 2022 Jun 16.
The Bayley Scales of Infant and Toddler Development is widely used worldwide. The objective of the current study was to measure the stability of the Bayley Scales during early childhood and its relationship with intellectual abilities at four years in young Nepalese children.
In a prospective cohort we used the Bayley 3rd edition to measure early child development in 529 Nepalese children at 6-11, 18-23 and 30-35 months. At four years, we used the Wechsler Preschool and Primary Scale of Intelligence (WPPSI) to measure intellectual abilities. We expressed the stability of the Bayley scores by intraclass correlation coefficients (ICCs) and concordance correlation coefficients (CCCs). The relationship between the Bayley scores and the WPPSI full-scale IQ (FSIQ) at four years was examined in regression models.
The ICCs between the Bayley scores across timepoints were 0.01 (95 % CI -0.06, 0.04), 0.19 (95 % CI 0.15, 0.26) and 0.22 (95 % CI 0.17, 0.28) for the Cognitive, Language and Motor composite scores. The CCC for the composite scores ranged from 0.05 to 0.20 between 6 and 11 and 30-35 months and from 0.20 to 0.36 between 18 and 23 and 30-35 months. The Bayley scores at 6-11, 18-23 and 30-35 months explained 3 %, 20 % and 36 % of the variation of the FSIQ.
The stability of the Bayley scales is poor in early childhood, and its relationship with future intellectual abilities is poor in infancy but improves slightly with age in early childhood. Findings from this large community-based cohort of healthy at-risk children are relevant when measuring early child development worldwide.
贝利婴幼儿发育量表在世界范围内广泛使用。本研究的目的是测量尼泊尔幼儿在早期童年时期贝利量表的稳定性及其与四岁时智力能力的关系。
在一项前瞻性队列研究中，我们使用贝利第 3 版在 6-11、18-23 和 30-35 个月时测量了 529 名尼泊尔儿童的早期儿童发育。在四岁时，我们使用韦氏学前和初级智力量表（WPPSI）测量智力能力。我们通过组内相关系数（ICC）和一致性相关系数（CCC）来表示贝利评分的稳定性。在回归模型中，我们研究了贝利评分与四岁时 WPPSI 全量表智商（FSIQ）之间的关系。
跨时间点的贝利评分的 ICC 分别为 0.01（95%CI-0.06，0.04）、0.19（95%CI0.15，0.26）和 0.22（95%CI0.17，0.28），适用于认知、语言和运动综合评分。综合评分的 CCC 范围为 0.05 至 0.20，适用于 6-11 个月和 30-35 个月之间，以及 0.20 至 0.36，适用于 18-23 个月和 30-35 个月之间。6-11 个月、18-23 个月和 30-35 个月的贝利评分解释了 FSIQ 的 3%、20%和 36%的变异。
贝利量表在幼儿期的稳定性较差，其与未来智力能力的关系在婴儿期较差，但在幼儿期随着年龄的增长略有改善。这项针对健康高危儿童的大型社区队列研究的结果在全球范围内测量早期儿童发育时是相关的。
