Child and Family Characteristics Associated with Symptoms of Anxiety in Autistic Children: A Biobank Study

Purpose: Autistic children have an increased likelihood of anxiety, but more research is needed on the characteristics that predict various types of anxiety in this population. Methods: In this study, we examined a range of child and family predictors of various types of anxiety using a sample of 452 autistic children from the Australian Autism Biobank. We used logistic regression to examine child and family predictors of four common types of anxiety in autistic children: generalised, phobic, separation, and social anxiety. Results: We found that 62.8% of children in this sample had symptoms of at least one type of anxiety. Poor quality sleep habits were the only predictive factor consistently identified across all anxiety symptom types. Specific to children with indicated generalised, separation, and phobic anxiety symptoms were the predictive factors of being older than five years, and specific to generalised and social anxiety were the predictive factors of higher cognitive abilities. Maternal anxiety was also a predictive factor in indicated children's separation anxiety. Conclusion: These findings can help inform the provision of more targeted support for autistic people, particularly the interaction of poor sleep habits and anxiety symptoms.