| Outcome Measures: |
Primary: Time in range, the change in time in range (TIR: 70-180 mg/dL, averaged per month) over 24 hours between 12 (±2) months before switch to 12 (±2) months after switch to Insulin Degludec, 12 months | Secondary: HbA1c, difference in HbA1c between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Time below 54 mg/dL, difference in time in clinically significant hypoglycemia (\<54 mg/dL averaged per month) over 24 hours, from 6 am to 10 pm, and from 10 pm to 6 am between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Time in range, difference in TIR (70-180 mg/dL, averaged per month) from 6 am to 10 pm, and from 10 pm to 6 am between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Time below 70 mg/dL, difference in time below range (\<70 mg/dL averaged per month) over 24 hours, from 6 am to 10 pm, and from 10 pm to 6 am between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Time above 180 mg/dL, difference in time above range (\>180 mg/dL averaged per month) over 24 hours, from 6 am to 10 pm, and from 10 pm to 6 am between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Time above 250 mg/dL, difference in time in significant hyperglycemia (\>250 mg/dL averaged per month) over 24 hours, from 6 am to 10 pm, and from 10 pm to 6 am between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Mean glucose, difference in mean glucose (averaged per month) over 24 hours, from 6 am to 10 pm, and from 10 pm to 6 am between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Glycemic variability, difference in glycemic variability (standard deviation, coefficient of variation; averaged per month) over 24 hours, from 6 am to 10 pm, and from 10 pm to 6 am between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Insulin dose, difference in insulin dose (total daily dose, basal dose, bolus dose) between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Body mass index, difference in body mass index (BMI) between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months | Other: Hospital visits and/or admissions due to hypoglycemia or ketoacidosis, difference in number of hospital visits and/or admissions due to hypoglycemia or ketoacidosis between 12 \[±2\] months before switch to 12 \[±2\] months after switch to Insulin Degludec, 12 months|Participants who discontinue the use of Insulin Degludec, number of participants who discontinue the use of Insulin Degludec, 12 months|Reason for discontinuation of Insulin Degludec, overview of reasons to discontinue Insulin Degludec (in tabular view), 12 months|Indication for use of Insulin Degludec, overview of reasons to start Insulin Degludec (in tabular view), baseline|Glycemic consensus targets, proportion of people reaching HbA1c and glucose consensustargets 12 \[±2\] months after switch to Insulin Degludec, 12 months
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