Participant groups involved in selecting outcomes.

* clinical experts includes multiple descriptions.**16 studies, participants described as ‘researchers/investigators’ or ‘academic researchers’.*** 54 studies with clinical input but unclear about involvement of other stakeholders.**** Workshop/meeting participants (*5), subcommittee/committee (*2), guidelines panel, military personnel, moderator and audience, representatives from EORTC, members with expertise in information technologies, informatics, clinical registries, data-standards development, expertise in vaccine safety, malaria control and representatives from funding agencies/registration authorities, and donor organisation, members of the Rheumatology Section of the American Academy of Pediatrics, the Pediatric Section of the ACR, and the Arthritis Foundation, the diagnostic radiology and basic science communities, and from individuals conversant with functional and quality of life (QOL) assessments, comparative effectiveness research, and cost/benefit analysis.