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Table 3 Process evaluation methods

From: Protocol for a cluster randomised controlled trial of a Peer-Led physical Activity iNtervention for Adolescent girls (PLAN-A)

Informant Method Data collected Time point
Peer supporter (PS) Register Training attendance PS training days
Questionnaire Quantitative and qualitative feedback about training enjoyment, activities, ability to prepare girls to peer support and trainer autonomy support Post two-day and top-up PS training
Questionnaire Quantitative and qualitative feedback regarding the types, frequency and extent of support given to peers Week 5 and 10 of intervention
Focus groups Thoughts on the PS training (and trainers), on their role as a peer supporter (enjoyment, successes, challenges, impact), and PS actions Post intervention
Trainer Questionnaire Quantitative ratings about the PS training arrangements, objective fulfilment and PS engagement Post two-day and top-up PS training
Training observation Observations on PS training logistics, PS engagement, intervention fidelity and trainer style PS training days
Semi-structured interviews Feedback about the train-the-trainers, delivery of PS training and improvements Post top-up PS training
Non-peer supporter Questionnaire Intervention schools only – contact with PS and its perceived impact T1
Focus groups Awareness of PLAN-A, thoughts on the PS, and perceived impact (did they talk to a PS? If so, did it help them change their behaviour?) Post intervention
School contact Semi-structured interview Level of involvement with the study, data collection arrangements, intervention implementation, potential impact and sustainability Post intervention
Public health commissioners Semi-structured interview Advice about sustainability and dissemination, funding and roll-out Post intervention