Table 4. Example of table of iterative intervention changes made during analysis.

Page or aspect of the intervention	Positive comment	Negative comments	Suggested change	Reason for change	Priority (MoSCoW)	Agreed change (if no change agreed, explain why)
Session 1: Page “What do I do next to get started?” Session 2: Page: “Monitoring your BP at home” Session 2: Page: Recording your readings”		Confusion over how often to monitor blood pressure, repeated by several participant, e.g. “So am I supposed to monitor my BP every day?”	Instructions made clearer to state monitor your blood pressure once a day for a week. This instruction needs to be repeated in sessions 1 and 2 as participants are forgetting between sessions.	Important to behaviour change Guiding Principles (home monitoring crucial to facilitate titration) Common Guiding Principles (promote competence in following procedure) Uncontroversial and Easy Repeatedly	Must have- crucial to following the self-monitoring procedure	Agreed.