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Table 2 Domains and methods for process evaluation

From: Effectiveness of peer support to increase uptake of retinal examination for diabetic retinopathy: study protocol for the DURE pragmatic cluster randomized clinical trial in Kirinyaga, Kenya

Source Domain Data collection method Stage of the trial
Trial registers Recruitment Retention Registers in the trial office Throughout the trial (n = 700)
Participants Fidelity
Reach
Dose received
Effectiveness
Participant Questionnaire
2 Focus group discussions at 6 months
At recruitment (n = 700)
Three months: n = 10% pf participants in each intervention cluster(35)
Six months: n = 10-% of participants in each cluster (35)
N = 28
Non-participant observations by PI Recruitment
Fidelity
Dose delivered
Context
PI Field notes N = 2 group meetings per intervention cluster during the trial (14)
Peer supporters (PS) Effectiveness
Reach
Fidelity
Dose delivered
Context
PS Questionnaires
PS Diary for telephone calls
PS Group session report form
Focus group discussion at 6 months
After training (n = 14)
Through the trial (n = 14)
Throughout the study (1 report form per group meeting per PS)
N = 7
Eye care workers
Key informants
Context In-depth interviews At 6 months
N = 3
N = 7
Research project manager Reach
Fidelity
Dose delivered
Reports At recruitment of PS
At training the PS
At 3 and 6 months
Research nurse Outcome evaluation procedures Report At 3 months and 6 months
Study steering committee Context Spreadsheet of external events that may have affected study outcomes At 6 months
  1. PI Principal Investigator, PS Peer supporter