Table 2.

RRCT competency categories

Category	Definition
RRCT practitioner	Participants who were directly involved in the conduct of an RRCT or who currently or previously supported an RRCT through their role of employment and who could clearly articulate the concept and the various ways the registry could support an RRCT. They could name RRCTs that they were involved with
RRCT proficient	Participants who may have supported an RRCT through their role of employment and who articulated the various ways a registry could support an RRCT and could name a registry that has supported an RRCT
RRCT aware	Participants who were familiar with the concept and were able to articulate some of the aspects of how a registry can support an RRCT. No prior involvement with RRCTs
RRCT beginner	Participants who had some idea of what an RRCT was but were unable to clearly articulate the various ways a registry could be used to support an RRCT. They could not name any RRCTs
RRCT novice	Participants who had no awareness of RRCT methodology