Support-t Online Training in Youth Living With Type 1 Diabetes Transitioning to Adult Care

The investigators will conduct a randomized controlled trial (RCT) to examine how an online training and peer support platform could help the preparation to transition to adult care. Among 14-16 year old youth with Type 1 Diabetes (T1D), the investigators aim to assess the effect of an online training and peer support platform (Support-t) integrated in usual care, compared with usual care on Hemoglobin A1c (HbA1c), adverse outcomes and psychosocial measures during the preparation for transition to adult care. The investigators will conduct a multi-site, parallel group, blinded (outcome assessors, data analysts), superiority RCT of adolescents with T1D (14-16 years of age) followed at one of 4 university teaching hospital-based pediatric diabetes clinics in the province of Quebec.

Inclusion Criteria: * Adolescents with a clinical diagnosis of T1D * 14-16 years of age * Receiving diabetes care at one of 4 university teaching hospital-based pediatric diabetes clinics in Quebec: Montreal Children's Hospital-McGill University Health Centre, Centre hospitalier universitaire de Sherbrooke, Le Copain-Hôpital de Gatineau, Centre Hospitalier Universitaire de Québec * Having access to internet * Having an active email address * Fluent in English or French Exclusion Criteria: * Severe neurocognitive disabilities * Patients with conditions associated with shortened erythrocyte survival, such as hemolytic anemia or other conditions associated with inaccurate HbA1c