Methods of fidelity capture
| Adherence to intervention | Exposure to intervention | Quality of intervention | Responsiveness to intervention | Differentiation elements essential for success |
| Audit: no of graphs reviewed 3 monthly | Audit: no of graphs reported 3 monthly | GP survey 12–18 months poststart date | GP survey Referral rates to secondary care annually | 1–1 interviews with nephrologists (project lead in each site) 12–18 months poststart date |
| 1–1 interviews (box 2) with staff who interpret the graphs (laboratory staff or renal nurse) 12–18 months poststart date | Practice focus groups: whether graphs are received by GPs 12–18 months poststart date. | Practice focus groups 12–18 months poststart date 4–8 staff, including a practice manager, GP(s) and practice nurse(s). | Practice focus groups 12–18 months poststart date |
The GP survey is shown in (online supplemental material interview) questions are shown in box 2.
GP, general practitioner.