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Comparison between the Clancy Behavior Scale and the Modified Checklist for Autism in Toddlers in Taiwan

Ching-Lin Chu1, Wen-So Su2,3, Lai-Sang Iao4

  • 1Department of Educational Psychology & Counseling, National Pingtung University, Pingtung 900391, Taiwan.

Children (Basel, Switzerland)
|May 25, 2024
PubMed

Insights

Early autism spectrum disorder (ASD) detection in toddlers is improved by combining the Clancy Behavior Scale (CBS) and the Modified Checklist for Autism in Toddlers (M-CHAT). Short forms of these tools show promising diagnostic accuracy for early ASD identification.

Area of Science:

  • Developmental Pediatrics
  • Child Psychology
  • Neurodevelopmental Disorders

Background:

  • Early diagnosis and intervention are critical for improving outcomes in toddlers with autism spectrum disorder (ASD).
  • Accurate screening tools are essential for identifying toddlers who may benefit from further evaluation and support.

Purpose of the Study:

  • To evaluate the effectiveness of the Clancy Behavior Scale (CBS) and the Modified Checklist for Autism in Toddlers (M-CHAT) in detecting ASD in toddlers under 30 months.
  • To compare the diagnostic accuracy of the full and short versions of the CBS and M-CHAT.

Main Methods:

  • A cohort of 215 toddlers (18-29 months; 117 with ASD, 98 with developmental delays) was assessed.
  • Primary caregivers completed both the CBS and M-CHAT for their children.
  • Sensitivity and specificity analyses were performed for each instrument's full and short forms.

Main Results:

  • Both the CBS and M-CHAT demonstrated promising accuracy in identifying ASD in toddlers.
  • The short form of the CBS (9 items) achieved a sensitivity of 0.75 and specificity of 0.74.
  • The short form of the M-CHAT (14 items) yielded a sensitivity of 0.72 and specificity of 0.85.

Conclusions:

  • Combining the CBS and M-CHAT enhances diagnostic accuracy for toddlers at high risk for ASD, especially when results are consistent.
  • These findings support the utility of these screening tools, particularly their abbreviated versions, for improving early ASD detection in young children.

Keywords:
Clancy Behavior ScaleM-CHATautism spectrum disordersensitivityspecificity

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