Darrah J, Redfern L, Maguire T O, Beaulne A P, Watt J
Dept of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada.
Early Hum Dev. 1998 Sep;52(2):169-79. doi: 10.1016/s0378-3782(98)00028-0.
The purpose of this study was to evaluate the intra-individual stability of gross motor scores obtained by normally developing full-term infants on the Alberta Infant Motor Scale (AIMS). The gross motor skills of 47 infants were assessed monthly in their homes by pairs of physical therapists. Infants were followed from two weeks of age until they achieved independent walking. A developmental pediatrician assessed each infant at 18 months of age, and classified the infant's gross motor skills as normal, suspicious or abnormal. Only the data of infants receiving a normal classification at 18 months were included in the analyses (n = 45). Individual infants' percentile ranks varied considerably from month to month, with no systematic pattern of change noted across infants. As a group, the mean percentile range over 13 assessments was 66.78 (S.D. 13.47). Fourteen infants (31.1%) received a score below the 10th percentile on at least one occasion. The results suggest that normally developing infants are not stable in the rate of emergence of gross motor skills. This instability has implications for infant screening programs, and supports the premise of serial assessments to identify accurately those infants with a motor delay.
本研究的目的是评估正常发育的足月儿在艾伯塔婴儿运动量表（AIMS）上获得的粗大运动评分的个体内稳定性。47名婴儿的粗大运动技能由物理治疗师两人一组每月在其家中进行评估。婴儿从两周大开始接受跟踪，直至他们能够独立行走。一名发育儿科医生在婴儿18个月大时对其进行评估，并将婴儿的粗大运动技能分类为正常、可疑或异常。分析中仅纳入了18个月时被分类为正常的婴儿的数据（n = 45）。个体婴儿的百分位排名逐月变化很大，未观察到婴儿之间有系统的变化模式。作为一个群体，13次评估的平均百分位范围为66.78（标准差13.47）。14名婴儿（31.1%）至少有一次得分低于第10百分位。结果表明，正常发育的婴儿在粗大运动技能出现的速度方面不稳定。这种不稳定性对婴儿筛查项目有影响，并支持进行系列评估以准确识别那些有运动发育迟缓的婴儿这一前提。
