A Validation Study of the CARS-2 Compared With the ADOS-2 in the Diagnosis of Autism Spectrum Disorder: A Suggestion for Cutoff Scores
- Author:
Seong-In JI
1
;
Hyungseo PARK
;
Sun Ah YOON
;
Soon-Beom HONG
Author Information
- Publication Type:ORIGINAL ARTICLE
- From:Journal of the Korean Academy of Child and Adolescent Psychiatry 2023;34(1):45-50
- CountryRepublic of Korea
- Language:English
-
Abstract:
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.
