This may make them much harder to follow-up. We will use a separate consent process for this part of the study and incentivise participation through the offer

of high street vouchers. Six in-depth interviews with care farm staff will also be conducted to identify details of activities, support provided, challenges, improvements, their perceptions of the high throughput chemical screening impacts of the care farm on offenders and their articulation of the purpose of the care farm. The researcher will keep a reflective log, paying particular attention to the dynamics and openness of participants during interviews. Qualitative analysis We will be applying a theoretical thematic analysis using theories on desistance and green care to structure the analysis. Theories on desistance suggest a number of factors contribute toward reducing the risk of re-offending including for example building social relationships, offering hope and motivation and developing self-efficacy.37 38 Green care theories suggest that mental well-being is enhanced through working in nature and interacting with animals.56

57 We will specifically enquire within the data how these theories might interact within the context of the care farm to understand impacts on attitudes to re-offending and perceptions of well-being. Recorded interviews will be transcribed verbatim by a member of the team who is not involved in the interviewing. Transcripts will be imported into Nvivo for coding purposes. Before coding, each interview transcript will be read and the recording listened to again by the interviewer/analyst

with a view to identifying meaningful units of text that relate to theories on desistance and green care and also ensuring accuracy of the transcription process. Coded data will be collated and codes that are repeated across transcripts or appear to be linked will be grouped into initial themes and/or subthemes (the latter may be lower order categories). This stage will involve developing an understanding about the relationships between codes and this may be facilitated by creating maps (MS excel is good for tracking, condensing and sorting data alongside visual maps—coding matrices can be exported from Nvivo into MS Excel). This process will be repeated between interviews allowing us to gauge when saturation has Dacomitinib been reached. The number of interviews expressed above should be seen as a guide only and may increase or decrease depending on when saturation can be reached. Although this will be a theoretical thematic analysis we will be open to new potential themes that are not represented by the guiding theories. Collaboration This study is built on the strengths of a multidisciplinary team of researchers with green care expertise from the Essex Sustainability Institute and the Green Exercise Research Team and Plant Research International, Wageningen University; with public health, statistics, qualitative research, health economics and systematic review expertise from the University of Leeds.