Get SET Early to Identify and Treatment Refer Autism Spectrum Disorder at 1 Year and Discover Factors That Influence Early Diagnosis.

Objectives To examine the impact of a new approach, Get SET Early, on the rates of early autism spectrum disorder (ASD) detection and factors that influence the screen-evaluate-treat chain. Study design Following Get SET Early training, 203 pediatricians administered 57,603 total screens using the Communication and Symbolic Behavior Scales Infant-Toddler Checklist at 12, 18, and 24-month well-baby examinations, and parents designated presence or absence of concern. For screen-positive toddlers, pediatricians specified if the child was being referred for evaluation, and if not, why not. Results Collapsed across ages, toddlers were evaluated and referred for treatment at a median age of 19 months, and those screened at 12 months (59.4% of sample) by 15 months. Pediatricians referred one-third of screen-positive toddlers for evaluation, citing lack of confidence in the accuracy of screen-positive results as the primary reason for non-referral. If a parent expressed concerns, referral probability doubled, and the rate of an ASD diagnosis increased 37%. Of 897 toddlers evaluated, almost half were diagnosed as ASD, translating into an ASD prevalence of 1%. Conclusions The Get SET Early model was effective at detecting ASD and initiating very early treatment. Results also underscored the need for change in early identification approaches to formally operationalize and incorporate pediatrician judgement and level of parent concern into the process.