Effect of Switching From Intermittently Scanned to Real-time Continuous Glucose Monitoring on Diabetes Management in Adults With Type 2 Diabetes (Switch CGM T2D)

Inclusion Criteria: * 18 years or older * Clinical diagnosis of T2D ≥ one year * Using insulin for ≥ 6 months * Continued FreeStyle Libre® 2 isCGM device (isCGM cohort) as of the study start date * Would like to switch from a FreeStyle Libre® 2 isCGM device to a Dexcom® G7 rtCGM device (rtCGM switch cohort) as of the study start date * Baseline HbA1c ≥ 7.5% * Known rtCGM/isCGM start date (month and year) * Exclusive use of isCGM for ≥ 3 months * Data on LibreView platforms have percent sensor capture ≥ 70% for 14 days of available data up to 6 months prior to index date * ≥ 1 value for TIR (%) up to 6 months (± 6 weeks) prior to index date * ≥ 1 value for HbA1c (%) up to 6 months (± 6 weeks) prior to index date * Data consent Exclusion Criteria: * Have a prior history of rtCGM within 12 months of the index date * Recent or expectant change to antihyperglycemic medications or doses within 30 days of index date * Recent or expectant titration of insulin dose ≥ 20% within 30 days of index date * Are pregnant at the time of study enrollment or intending to become pregnant during the study * Used the isCGM or rtCGM for \< 3 months * Using continuous subcutaneous insulin infusion