This project contains the following underlying data: (1) Appendix 1_Systematic reviews of which we were already aware and experts consulted.docx, (2) Appendix 2_Data extraction tools for review of systematic reviews.docx, (3) Appendix 3_Online survey.docx, (4) Appendix 4_Search results.docx, (5) Appendix 5_Information provided by included systematic reviews.docx, (6) Appendix 6_PPIE suggestions.docx, (7) Appendix 7_ADAPT reporting checklist.docx, (8) Appendix 8_LTPS design as piloted.docx, (9) Figure 1_Logic model.jpg, and (10) Supplementary Materials 1_consent form for online survey.docx.