Abstract
Objective
This study aimed to develop the Computerized Adaptive Test of Motor Development (MD-CAT)
in preschool children based on multidimensional Rasch analysis.
Design
A retrospective study with cross-sectional design.
Setting
A medical center.
Participants
A total of 1738 children (N=1738).
Interventions
Not applicable.
Main Outcome Measures
MD-CAT.
Results
Multidimensional Rasch analysis was used to develop the item bank of the MD-CAT. The
item bank of the MD-CAT contained 74 items, with 44 and 30 items, respectively, for
the subscales of gross and fine motor skills. High correlation existed between the
2 subscales (r=0.96). Three stopping rules were set for the MD-CAT: (1) the person reliability achieved
0.95 or the limited reliability increase by <0.01; (2) at least 3 items were assessed
in each dimension; and (3) the number of items used for assessment reached 16. Based
on the 3 stopping rules, the MD-CAT had high correlations with its total test length
(r=0.87-0.98 for the 2 dimensions), indicating sufficient construct validity. The MD-CAT
also had adequate diagnostic validity (area under the curve=0.72-0.93) and efficiency
(an average of 3-6 items used for the assessment).
Conclusions
The MD-CAT has high precision and efficiency, good construct validity, and high diagnostic
validity. The results of our study indicate that the MD-CAT can be useful in clinical
practice and in research as a diagnostic measure.
Keywords
List of abbreviations:
AUC (area under the curve), CAT (computerized adaptive test), CDIIT (Comprehensive Developmental Inventory for Infants and Toddlers), DQ (developmental quotient), EAP/PV (expected a posteriori/plausible value), FM-CAT (Computerized Adaptive Test of Fine Motor Skills), GM-CAT (Computerized Adaptive Test of Gross Motor Skills), MD-CAT (Computerized Adaptive Test of Motor Development), MNSQ (mean square), MRM (multidimensional Rasch modeling)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: July 07, 2021
Accepted:
June 20,
2021
Received in revised form:
May 6,
2021
Received:
August 13,
2020
Footnotes
Disclosure: None.
Supported by Chi-Mei Hospital and National Cheng Kung University Hospital (grant no. CMFHR10767).
Identification
Copyright
© 2021 The American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.
