The interview process
Semi‐structured one‐to‐one telephone interviews, conducted by an experienced interviewer, were undertaken with the eight participants. The interviewer was employed as a clinical researcher on the team and had previously been one of the coaches for the PREVENTS study. However, none of the participants had been coached by the interviewer, and none were previously known to her in any other capacity. In order to reduce the risk of the interviewer's previous role influencing participant answers, the interviewer's previous involvement in the PREVENTS study was not disclosed to study participants. The interviewer had extensive experience conducting interviews for research purposes, including one‐to‐one interviews (structured and semi‐structured), questionnaires, and conducting focus groups. An interview guide was used for the interviews, which was produced by senior members of the research team. The sample questions have been submitted as supplementary information to this article. Interviews were audio‐recorded and transcribed verbatim. Interview notes were taken by the interviewer to capture key observations to support analysis. These observations were discussed extensively within the research team in order to ensure integrity and avoid confirmation bias.Some participants completed their telephone interviews at home, whereas others completed them at their place of employment during lunch breaks or after work. All were completed telephonically with no other persons present other than the interviewer and interviewee. The mean interview duration was 12 min, the shortest being 9 min and 16 s and the longest being 18 min and 47 s, respectively. Participants were given the opportunity to review the recordings upon request for the purpose of clarifying or amending their responses. None of the participants requested to do so. The aim of thematic analysis is to ensure that the sample size is small enough to enable an in‐depth understanding of the phenomenon, whilst large enough to capture breadth of experience (Sandelowski, 