Retrospective Review of Children's Diagnostic Assessments for Autism Spectrum Disorder in British Columbia: Are we Identifying Co-occurring Motor Deficits?

This study demonstrates consistently low rates of DCD diagnosis across 2 periods: before and after the publication of the DSM-5. Despite a modest increase, the prevalence of ASD + DCD co-diagnoses after the introduction of DSM-5, DCD rates remain significantly lower than reported in the literature. This discrepancy suggests significant and persistent underdiagnosis of DCD in children with ASD in British Columbia.