Data collection and analysis
ALL
Interviews were conducted between April and June of 2019. Two implementation scientists (JLR and ALL) conducted interviews using a semi-structured interview guide; questions focused on perceptions of acceptability, appropriateness, and feasibility of the E2C2 intervention, including potential implementation challenges. Participants were asked about existing care delivery approaches for symptom management, clinical workflows, and patient factors (e.g., patient portal use in their local patient population). The interview guide was reviewed by the multidisciplinary team. Interviewers had some familiarity with interviewees prior to the interviews as part of pre-implementation engagement efforts in preparation for implementation of the intervention, but oral consent procedures and consent language described procedures for maintaining confidentiality, and interviewers encouraged both positive and negative views to be shared. Interviews were audio-recorded and transcribed verbatim.The analytic plan followed methods of directed content analysis, which is a deductive approach guided by existing knowledge about the phenomenon or relevant theory [