Sleep disturbance as a predictor of anxiety in children with Fetal Alcohol Spectrum Disorders and typically developing children

•This is the largest study to examine sleep in FASD.•We report that a significant proportion of anxiety can be predicted by sleep problems. This is true for both TD and FASD populations.•Children with FASD experienced significantly higher levels of sleep problems and anxiety than TD children, the majority at clinical levels.•Sleep interventions should be a clinical priority for children with FASD.