Progression criteria
The following criteria for evaluating the feasibility of progression to a randomised controlled trial (RCT) of the TpT-intervention was based on previous studies and the chosen feasibility measures [Acceptance rate of the intervention of > 80%.Completion rate of the intervention of > 80%.Completion rate of the child/adolescent- and parent-reported experiences measures: > 80% in line with previous studies on the use of CARE [Child/adolescent- and parent-reported experience measures: More than 50% of responses in the two higher response categories for the Visual CARE measure and the parent-reported experience measure of the intervention (PREM01).A significant difference in parent-reported experience between previous experience with healthcare and experience with the TpT-intervention, to suggest that this is a possible improvement of existing healthcare for children and adolescents with complex health complaints and multiple referrals.In addition, the feasibility of the study was evaluated using Shanyinde et al. [