Data access statement:

Data availability
Underlying data
Repository: UCL Research Data Repository.

https://doi.org/10.5522/04/27159861.v435

This project contains the following extended and underlying data:

TIDieR (Template for Intervention Description and Replication) Checklist

GUIDED (Guidance for reporting intervention development studies in health research) Checklist

Extended data file (Table 1. Summary of intervention development through co-production meetings; Table 2. PETAL intervention modules and how they map onto the Theoretical Domains Framework (TDF) domains; Table 3. Implementation strategies following Normalisation Process Theory (NPT); Table 4. Baseline measures collected during the modelling study; Table 5. Findings from the modelling study and changes made to the PETAL therapy)

PETAL Modelling study data

Interview transcripts

Data are available under the terms of the https://creativecommons.org/licenses/by/4.0/ (CC BY 4.0).

All materials (i.e., participant information sheets, consent forms and topic guides) can be found on the PETAL website (https://www.ucl.ac.uk/psychiatry/research/epidemiology-and-applied-clinical-research-department/petal-programme/materials) which is free to access."