Development of T-STAT for early autism screening

Area of Science:

• Developmental Pediatrics
• Child Psychology
• Autism Spectrum Disorder Research

Background:

• Early identification of Autism Spectrum Disorder (ASD) is crucial for timely intervention.
• Existing screening tools require adaptation for diverse cultural and linguistic contexts.
• The Screening Tool for Autism in Two-Year-Olds (STAT) is a valuable tool for early ASD detection.

Purpose of the Study:

• To adapt and validate the STAT for use in Taiwan, creating the Taiwanese STAT (T-STAT).
• To establish the psychometric properties of the T-STAT for screening toddlers at risk for ASD.
• To assess the T-STAT's utility as a Level 2 screening instrument.

Main Methods:

• Study 1: Pilot testing of T-STAT with 30 children (15 ASD, 15 DD/LI) aged 24-35 months.
• Signal detection analysis in Study 1 to determine optimal cutoff scores.
• Study 2: Clinical validation of T-STAT with 77 young children (ASD, PDD-NOS, DD/LI).
• Comparison of T-STAT risk classification with Autism Diagnostic Observation Schedule (ADOS) in Study 2.

Main Results:

• A T-STAT cutoff score of 2 indicated high sensitivity and specificity in Study 1.
• Study 2 confirmed a highly acceptable agreement between T-STAT risk assessment and ADOS classification.
• The T-STAT demonstrated promising results as a Level 2 screening tool for autism in children aged 2-3 years.

Conclusions:

• The T-STAT is a reliable and valid screening tool for identifying toddlers at risk of ASD in Taiwan.
• The T-STAT facilitates early detection and intervention for autism in the Taiwanese population.
• The adapted T-STAT shows potential for widespread use in early childhood developmental surveillance.