Overview
Ethical approval was obtained from The University of Manchester Research Ethics Committee (ref: 2020-8446-15312). All methods were performed in accordance with the relevant guidelines and regulations (Declaration of Helsinki). The study was conducted in three phases as part of a larger six-month follow-up study examining the effectiveness of an intervention for reducing self-harm (ClinicalTrials.gov Identifier: NCT04420546). In phase 1, we focused on intervention development, and phase 2 focused on developing and testing an experimental approach to evaluating whether refining an intervention based on participant feedback increases acceptability. Phase 3 is currently ongoing, and is focused on evaluating the effectiveness of the intervention.