Parent and staff perspectives
RECRUITMENT
To explore perspectives of key stakeholders on the acceptability and design of a definitive SDD cRCT, we invited parents of children in participating units to complete a questionnaire and/or participate in an interview approximately a month after leaving hospital. We also invited staff involved in the pilot trial to take part in a focus group at the end of recruitment. Interviews and focus groups were audio recorded after consent was obtained. The methodology for qualitative data analysis is outlined in supplementary Table Qualitative thematic analysis was interpretative and iterative and informed by the constant comparative approach. NVivo 10 software (QSR International, Warrington, UK) was used to assist the coding of data. Survey data were analysed using SPSS for descriptive statistics. Qualitative and quantitative data were analysed separately and then synthesised through constant comparative analysis.