My 7 year old son had his yearly checkup today with the best A1C so far - 6.3! I really have to attribute this change over the last year to the Dexcom CGM. It has been such a great tool to help us adjust basal rates and see his patterns during the day. His A1C prior to Dexcom ran around 7.2/7.3. 6 months after Dexcom - down to 6.7 1 year (and about 2 months) after Dexcom - down to 6.3 I would imagine there are studies out there that would go along with this- ? - If you have ever thought about Getting a Dexcom - definitely look into it!