Guidance for reporting intervention development studies in health research (GUIDED): an evidence-based consensus study

To improve the quality and consistency of intervention development reporting in health research.

This was a consensus exercise consisting of two simultaneous and identical three-round e-Delphi studies (one with experts in intervention development and one with wider stakeholders including funders, journal editors and public involvement members), followed by a consensus workshop. Delphi items were systematically derived from two preceding systematic reviews and a qualitative interview study.