Abstract
The aim of this study was to adapt and evaluate the Developmental Coordination Disorder Questionnaire (DCDQ) for use in Chinese-speaking countries. A total of 1082 parents completed the DCDQ and 35 parents repeated it after 2 weeks for test–retest reliability. Two items were deleted after examination of test consistency. Cronbach's α for the total score was 0.89 and test–retest reliability was 0.94. Exploratory and confirmatory factor analyses showed this version to be compatible with the original and two adaptations of the DCDQ. One-way ANOVA and the post hoc tests revealed that the non-DCD group scored significantly higher than the DCD group and the suspect DCD group, but the latter two did not differ significantly. Sensitivity and specificity of the DCDQ were 73% and 54%. The estimated area under the Receiver Operating Characteristic curve was 0.68. Compared to the dichotomized grouping in assessing sensitivity and specificity, which provides clinicians with all or none information about a child's probability of being DCD, the informative conditional effect plot could alert clinicians to the child with less conspicuous movement problems. This adaptation of the DCDQ could be used for identifying motor coordination problems in Chinese-speaking societies.
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