The research team members reflected on the impact of their background, training, beliefs and relationship to the research topic. Eleven of the authors conceptualised or were involved in operationalising the P-ATS being evaluated (JB, WI, JC, MB, JD, LF, PM, AF, JCh, AT, PT), although these researchers were not involved in evaluation data collection or analysis. Survey data were analysed by a researcher who was not involved in recruitment, intervention delivery or data collection (JH). Of the researchers who collected qualitative data, one had medical training (CC), and one was a psychologist (HB). Of the researchers who conducted thematic analysis, one was a nurse who had not collected data (LB), the other had moderated focus groups and conducted interviews (CC) which may have influenced interpretation but was mitigated by team reflexivity.