Randomisation and allocation
Prior to services receiving the invitation to complete the follow-up survey, the sample of eligible ECEC services (n = 1026) were randomly allocated to one of three groups; (i) an e-newsletter resource; (ii) an animated video resource; or (iii) control (i.e. standard email containing the Guidelines as per the Department of Education website for indoor-outdoor programming and outdoor activities). Randomisation of services was stratified by area socio-economic status (SES) (classified using service postcode according to the Socio-Economic Indexes for Areas (SEIFA) categorisation [