a. Note: For randomization, presence of at least one of the diabetes-related autoantibodies [Insulin autoantibodies (IAA) at diagnosis prior to initiation of insulin, Islet cell antibodies (ICA), Anti-GAD (GAD65), Anti-IA2 (IA2), Zinc Transporter 8 (ZnT8)] must be documented either from medical records or new laboratory measurement (IAA and ICA not measured by central lab) sent to central lab for participants who were ≥10 years old at diagnosis.