“…The CFM has been developed for measuring child functioning in surveys with parents/caregivers as proxy respondents for the child’s functioning. It has been validated in different settings [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ] and was finalised in 2016. The CFM is designed for children between two and 17 years and covers a range of areas for measuring functioning difficulties, including: seeing, hearing, walking, self-care, speaking, learning, remembering, anxiety/worry, depression/sadness, controlling behaviour, attention/concentrating, accepting changes in routine and making friends.…”