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KMID : 0367320230340010045
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Journal of the Korean Academy of Child and Adolescent Psychiatry
2023 Volume.34 No. 1 p.45 ~ p.50
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A Validation Study of the CARS-2 Compared With the ADOS-2 in the Diagnosis of Autism Spectrum Disorder: A Suggestion for Cutoff Scores
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Ji Seong-In
Park Hyung-Seo
Yoon Sun-Ah
Hong Soon-Beom
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Abstract
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Objectives: This study examined the validity of the Childhood Autism Rating Scale, Second Edition (CARS-2) compared with the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2) in identifying autism spectrum disorder (ASD).
Methods: A total of 237 children were tested using both the CARS-2 and ADOS-2. We examined the correlation using Pearson’s correlation analysis. In addition, we used a receiver operating characteristic graph to determine the optimal standard version of the CARS-2 (CARS2-ST) cutoff score for ASD diagnosis using the ADOS-2.
Results: The concurrent validity of the CARS2-ST was demonstrated by a significant correlation with the ADOS-2 (r=0.864, p<0.001).
The optimal CARS2-ST cutoff scores were 30 and 28.5 for identifying autism and autism spectrum, respectively, based on the ADOS-2.
Conclusion: We suggest a newly derived CARS2-ST cutoff score of 28.5 for screening ASD and providing early intervention.
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KEYWORD
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Autism spectrum disorder, ADOS-2, CARS-2, Diagnosis, Screening
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