Compared with the general population of people with type 1 diabetes, those in the fatal/AICU admission group were older (mean age 71.4 vs 44.5 years), had higher mean BMI (27 vs 26 kg/m2), higher mean HbA1c (69 vs 67 mmol/mol), lower mean eGFR (72 vs 100 ml min−1 [1.73 m]−2), higher prevalence of heart disease (61% vs 14%) and lower insulin pump use (2% vs 14%). Here, INS is linked to type 1 diabetes mellitus.