Clinical Report: Evaluation of Module-Specific Diagnostic Performance of ADOS-2
Overview
This systematic review and meta-analysis evaluated the diagnostic accuracy of the ADOS-2 across different modules in clinical referral settings.
Background
The ADOS-2 is a key tool in diagnosing autism spectrum disorder (ASD), yet its performance can vary significantly in real-world clinical settings.
Data Highlights
Measure
Pooled Sensitivity
Pooled Specificity
HSROC AUC
Overall
0.88 (95% CI: 0.83–0.92)
0.74 (95% CI: 0.68–0.80)
0.86
Toddler Module
0.92
0.88
0.94
Key Findings
Overall pooled sensitivity of ADOS-2 is 0.88.
Pooled specificity is 0.74, indicating moderate accuracy.
The Toddler Module shows the highest diagnostic performance with sensitivity of 0.92 and specificity of 0.88.
Reduced specificity is more common in higher ADOS-2 modules, particularly among verbally fluent adolescents and adults.
Psychiatric referral settings and adult samples significantly contribute to reduced specificity.
No significant publication bias was detected in the studies reviewed.
Clinical Implications
Clinicians should be aware of the variable specificity of ADOS-2 across different modules, particularly in adult populations with psychiatric complexities.
Conclusion
ADOS-2 demonstrates high sensitivity but variable specificity in real-world clinical settings.
