INS and type 1 diabetes mellitus: Responses were received from 76 (68%) centers in the SWEET database (uploaded data for a total of 27,819 subjects) with 52% male, 12.9 (IQR 9.7; 15.5) years old, age at T1D onset 7.3 (4.1; 10.5), BMI SDS 0.53 (−0.17; 1.25), mean HbA1c 62 (53; 74) mmol/mol or 7.8 (7.0; 8.9) %, and daily insulin requirement 0.8 (0.63; 0.98) U/kg.