White 2017.

Study characteristics
Methods	Clinic attendance and disengagement of young adults with type 1 diabetes after transition of care from paediatric to adult services (TrACeD): a randomised, open‐label, controlled trial RCT (NA clusters and NA providers), conducted in 1) Tertiary paediatric diabetes service at the Royal Children’s Hospital, Melbourne, VIC, Australia. 2) The intervention was delivered by appointment manager (MW), medical specialist who undertook the project as part of a research degree. In Australia. 2 arms: 1. Control (current care) (control arm) and 2. Intervention (appointment management) (intervention arm)
Participants	Control arm N: 60 Intervention arm N: 60, NA, NA Diabetes type: 1 Mean age: 18.8 ± 9.29 % Male: 49 Longest follow‐up: 24 months
Interventions	Control arm: (current care) Intervention arm: (appointment management) 1) Case management 2) Patient education 3) Patient reminders
Outcomes	Glycated haemoglobin
Funding source	This study was funded by the Australasian Paediatric Endocrine Group and Lilly (research grant 2012)
Notes	—
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	"A statistician not directly involved in the analysis of study results prepared the randomisation schedule. We randomly assigned participants (1:1), using sequential sealed opaque envelopes, to either appointment management (intervention) or current care (control)."
Allocation concealment (selection bias)	Low risk	"We randomly assigned participants (1:1), using sequential sealed opaque envelopes, to either appointment management (intervention) or current care (control)."
Patient's baseline characteristics (selection bias)	Low risk	At the time of transition, baseline characteristics including mean age and glycaemic control (HbA1c) were similar between groups (Table 1).
Patient's baseline outcomes (selection bias)	Low risk	No P values. At the time of transition, baseline characteristics including mean age and glycaemic control (HbA1c) were similar between groups (Table 1).
Incomplete outcome data (attrition bias)	High risk	Figure: Trial profile. By 24 months, 23/60 (38%) lost in control, 28/60 (46%) lost in intervention. Reasons provided.
Blinding of participants and personnel (performance bias) and of outcome assessors (detection bias)	Low risk	Objective measure HbA1c.
Selective reporting (reporting bias)	Low risk	Prospectively registered protocol. Methods match outcomes.
Risk of contamination (other bias)	Low risk	Patient‐randomised. Unlikely that control group received appointment management.
Other bias	Low risk	None identified.