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Psychometric Properties of the General Movement Optimality Score using Rasch Measurement

机译:使用Rasch测度的一般运动最佳评分的心理计量学特性

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AIM: To explore the psychometric properties of the general movements optimality score (GMOS) by examining its dimensionality, rating scale functioning, and item hierarchies using Rasch measurement. METHODS: Secondary data analysis of the GMOS data for video-recording of 383 infants with uni-, multidimensional, and mixed Rasch partial credit models. Videos were scored based on the global General Movement Assessment categories, and on the amplitude, speed, spatial range, proximal and distal rotations, onset and offset, tremulous and cramped components of the upper and lower extremities (21 items), resulting in the GMOS. RESULTS: The GMOS data fits best to a unidimensional mixed Rasch model with three different classes of infants, with all but two items contributing to the infants' separation. Rating scales functioned well for 19 items. Item difficulty hierarchies varied depending on infants' class. No floor effect and no substantive gaps between item difficulty estimates were found. CONCLUSION: The GMOS has strong psychometric properties to distinguish infants with different functional motor performance and provides a quantitative measure of quality of movement. INTERPRETATION: The GMOS can be confidently used to assist with early diagnosis, grade motor performance, and provide a solid base to study individual general movement developmental trajectories.
机译:目的:通过使用拉希(Rasch)测量检查通用运动最优评分(GMOS)的维度,等级量表功能和项目层次结构,以探索其心理测量特性。方法:对GMOS数据进行二次数据分析,以单,多维和混合Rasch部分信用模型对383名婴儿进行视频记录。视频是根据全球通用运动评估类别以及振幅,速度,空间范围,近端和远端旋转,上肢和下肢的发作和偏移,颤抖和狭窄的成分(21个项目)进行评分的,从而产生了GMOS 。结果:GMOS数据最适合具有三类不同婴儿的一维混合Rasch模型,除两个项目外,所有其他因素均有助于婴儿的分离。评分量表对19个项目的运作良好。项目难度等级取决于婴儿的等级。没有发现底线影响,项目难度估计之间也没有实质性的差距。结论:GMOS具有强大的心理测量特性,可以区分具有不同功能运动表现的婴儿,并提供运动质量的定量测量。解释:GMOS可以放心地用于协助早期诊断,提高运动成绩,并为研究个体一般运动发展轨迹提供坚实的基础。

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    《Journal of applied measurement》 |2020年第1期|17-37|共21页
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    University of Illinois at Chicago;

    University of Groningen the Netherlands;

    University of Pisa;

    University of Modena;

    Medical University Graz Austria;

    Children's Hospital of Fudan University Shanghai;

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