Fifty-nine parents of children ( mean age 7 years , SD 3 years , 1 month ; 35 males , 24 females ) with ABI ( Traumatic injuries 58 % , Tumour 17 % , Encephalitis or meningitis 15 % , Cardiovascular accident 7 % , Hypoxia 3 % ) who were evidencing at least mild behaviour problems were randomly assigned to treatment or care-as-usual conditions over 10 weeks .