WHODAS-Child: psychometric properties of the WHODAS 2.0 for children and youth among Italian children with autism spectrum disorder.

The WHODAS-Child Italian proxy-administered version has the potential to be a reliable and valid tool to measure functional impairment in children with ASD. Implications for rehabilitationWorld Health Organization Disability Assessment Schedule 2.0 for children and youth (WHODAS-Child) has shown to be sensitive in detecting children and youth functioning in the domains of activity and participation.WHODAS-Child Italian version seems to be a reliable and valid tool to measure the functional impairment in children with autism spectrum disorder.A critical issue for rehabilitation is that a single "minimal clinically important difference" score for the WHODAS-Child has not yet been established.