Table 3 Summary of data collection

Practice level

• Audit; ongoing data collection (i.e., number of eligible patients, number of reminders delivered) [reach, fidelity]

• Research processes; data collection at study start (i.e., recruitment and retention, briefing attendance and feedback), and via monthly phone calls to practices (i.e., role assignment, changes to the intervention protocol, time and resource use, any feedback) [feasibility, fidelity, costs (resource use)]. Information collected will vary according to timing of the phone call. For example, during the first phone call, the time taken to conduct the audit will be recorded; during the second call, the time needed to deliver reminder phone calls will be recorded.

Professional

• Staff questionnaires at study cessation [appropriateness, acceptability and feasibility]

• Staff interviews at study cessation [acceptability, feasibility and fidelity]

Patient

• Patient interviews or focus groups, at study cessation [acceptability and fidelity]