Recruitment
Clinic rosters of youth in the SCD hematology clinic were assessed for the following eligibility criteria: (1) aged 17-20 inclusive; (2) confirmed diagnoses of SCD (SS, SC, SBeta Thalassemia genotypes); (3) cared for in the subspecialty Pediatric Hematology service; (4) spoke English. Eligible patients were telephoned and invited to participate in the study. Those who were interested met the study coordinator at their next medically indicated clinic visit; those 18 and older provided written informed consent; those who were aged 17 provided assent and their parents provided permission.