Cost
In total, 59/64 invoices were collected from centres over the 8-week intervention period. Five invoices (8 %) were missing across two comparison centres. Missing invoices were assumed to be non-biased and missing completely at random as missingness resulted from cooks misplacing invoices. Mean intervention centre menu expenditure was AUD$4·62 (95 % CI ($4·58, $4·67)) per child/d, compared with AUD$2·28 (95 % CI ($2·27, $2·30)) per child/d in comparison centres.