Warschausky Seth, Gidley Larson Jennifer C, Raghunathan Trivellore, Berglund Patricia, Huth-Bocks Alissa, Taylor H Gerry, Staples Angela D, Lukomski Angela, Barks John, Lajiness-O'Neill Renee
Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI, USA.
Institute of Social Research, Michigan Medicine, Ann Arbor, MI, USA.
Dev Med Child Neurol. 2024 Jun;66(6):725-732. doi: 10.1111/dmcn.15816. Epub 2023 Nov 23.
To examine the extent to which estimates of a latent trait or underlying construct of motor ability differ in infants born at term and preterm, based on caregiver ratings of the motor domain of PediaTrac v3.0.
The sample consisted of 571 caregiver-infant dyads (331 born at term, 240 born preterm), 48% female, with 51.7% of caregivers identifying as an ethnic minority. Latent trait of motor ability was estimated based on item response theory modeling. Gestational group differences (term and preterm birth) were examined at the newborn/term-equivalent, 2-, 4-, 6-, 9-, and 12-month time points.
Caregiver ratings of latent trait of motor ability were reliably modeled across the range of abilities at each time point. While the group born preterm exhibited significantly more advanced motor abilities at the term-equivalent time point, by 6 months the group born at term was more advanced. Biological sex difference main and interaction effects were not significant.
Caregivers provided reliable, longitudinal estimates of motor ability in infancy, reflecting important differences in the motor development of infants born at term and preterm. The findings suggest that significant motor development occurs in infants born preterm from birth to the term-equivalent time point and provide a foundation to examine motor growth trajectories as potential predictors in the early identification of neurodevelopmental conditions and needs.
Longitudinal caregiver ratings of motor function in early infancy yielded reliable estimates of the latent trait of motor ability. Motor ability at the term-equivalent time point was higher in infants born preterm than infants born at term.
基于PediaTrac v3.0运动领域的照料者评分，研究足月儿和早产儿运动能力的潜在特质或潜在结构估计值的差异程度。
样本包括571对照料者与婴儿（331名足月儿，240名早产儿），48%为女性，51.7%的照料者为少数族裔。基于项目反应理论模型估计运动能力的潜在特质。在新生儿/足月等效、2个月、4个月、6个月、9个月和12个月时间点检查孕周组差异（足月儿和早产儿）。
在每个时间点的能力范围内，照料者对运动能力潜在特质的评分都能可靠地建模。虽然早产儿组在足月等效时间点表现出明显更先进的运动能力，但到6个月时，足月儿组更先进。生物学性别差异的主效应和交互效应不显著。
照料者提供了婴儿期运动能力可靠的纵向估计，反映了足月儿和早产儿运动发育的重要差异。研究结果表明，早产儿从出生到足月等效时间点会发生显著的运动发育，并为检查运动生长轨迹作为早期识别神经发育状况和需求的潜在预测指标提供了基础。
婴儿早期运动功能的纵向照料者评分得出了运动能力潜在特质的可靠估计。足月等效时间点时，早产儿的运动能力高于足月儿。
