Parent-reported and clinician-observed autism spectrum disorder (ASD) symptoms in children with attention deficit/hyperactivity disorder (ADHD): implications for practice under DSM-5

Table 2 Percent meeting cut-offs on the ADOS and ADI-R

	ADHD	ASD
	(n = 48)^a	(n = 164)^a
ADOS cut-off	21	85
ADI-R (social, communication, RRB, and age of onset) cut-offs	30	67
Social cut-off	57	82
Communication cut-off	61	87
RRB cut-off	67	88
Age of onset cut-off	80	88
ADI-R CPEA ASD criteria^a	67	84
Combining measures
ADOS and ADI-R (social, communication, RRB, and age of onset)	11	60
ADOS and ADI-R CPEA ASD criteria^a	15	75

ADHD attention deficit/hyperactivity disorder, ASD autism spectrum disorder, df degrees of freedom, RRB restricted repetitive behaviors on ADI-R
^aCPEA criteria was determined based on Lainhart et al. [53]; Two children with ADHD and eight children with ASD were missing ADI-R data

ISSN: 2040-2392