Can questions about social interaction correctly identify preschool aged children with autism?
OBJECTIVE
We developed a questionnaire to assess social development (SIQ) in preschool children. Social development is often not included in medical assessment, though it may assist in early identification of autism spectrum disorder (ASD).


METHODS
Parents of 108 children with ASD, speech and language disorders, or 'developmental concerns', recruited from a clinical developmental assessment and community child health service, completed the SIQ, and also a Childhood Autism Rating Scale (CARS) assessment. Receiver Operator Characteristic (ROC) curves were generated to assess the performance of different questionnaire score thresholds in correctly identifying children with a CARS score of 30 or more. Logistic regression models were used to identify the questions which had the most predictive value for a CARS score of 30 or more.


RESULTS
An SIQ score of 14 or more correctly identified children with a CARS ≥ 30 with a sensitivity of 85%, specificity 85%, positive likelihood ratio (LR) 8.3 and negative LR 0.2. Two questions were identified as most predictive of ASD.


CONCLUSIONS
The SIQ may assist clinicians in assessing social development and in making decisions about referral for autism assessment. Evaluation of the SIQ at the point of entry to a clinical service is needed.
Department of Community Child Health, Sydney Children's Hospital, Sydney, New South Wales, Australia. katrina.williams@rch.org.au
Katrina
K
Williams
Deborah
D
Perkins
Danielle
D
Wheeler
Andrew
A
Hayen
Vivian
V
Bayl
D001321:Autistic Disorder / Q000175:diagnosis*; D057189:Checklist; D002675:Child, Preschool; D006801:Humans; D007398:Interpersonal Relations; D009517:New South Wales; D036301:Qualitative Research; D012372:ROC Curve; D011795:Surveys and Questionnaires