Table 1. Guided checklist for ROWTATE intervention development.

Item description	Page in manuscript where item is located	Other*
1. Report the context for which the intervention was developed	2, 3
2. Report the purpose of the intervention development process	3
3. Report the target population for the intervention development process	2
4. Report how any published intervention development approach contributed to the development process	3, 4
5. Report how evidence from different sources informed the intervention development process	4–16, 19
6. Report how/if published theory informed the intervention development process	9
7. Report any use of components from an existing intervention in the current intervention development process	4
8. Report any guiding principles, people or factors that were prioritised when making decisions during the intervention development process	13, 40
9. Report how stakeholders contributed to the intervention development process	4, 7,12, 13
10. Report how the intervention changed in content and format from the start of the intervention development process	13, 14, 64	Online supplemental table 6
11. Report any changes to interventions required or likely to be required for subgroups	12–13,
12. Report important uncertainties at the end of the intervention development process. Intervention development is frequently an iterative process	Discussion, 18
13. Follow TIDieR guidance when describing the developed intervention	69–74	Online supplemental table 9
14. Report the intervention development process in an open access format

^*e.g. iIf item is reported elsewhere, then the location of this information can be stated here.