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Use of CGM in T2D is rising rapidly, yet little is known regarding its effects on glucose management in the VHA. We thus identified new CGM users (new CGM sensor prescriptions for T2D on insulin) and non-users (T2D receiving glucose strips) during the years 2015-2020 and used national VHA healthcare data from visit encounters to compare change over 12 months in glucose control and new emergency room (ER) or hospital admissions. Changes in HbA1c and acute admissions were compared by linear mixed models and generalized linear models, respectively. Compared with 36,082 non-users, CGM users (n=16,013) differed in many ways but were well-balanced with overlap weighting from propensity score modeling. CGM users had a greater reduction in HbA1c over 12 months (-0.25%; 95% CI -0.21-0.29, p 8. 4% (median) had greater reductions in HbA1c, while those at higher hypoglycemia risk had reduced hypoglycemia and hyperglycemia related ER visits/hospitalizations and all-cause hospitalizations (Table) . In this large national study in T2D, CGM initiation was linked with better glucose control and reduced ER and/or hospital admissions for hypoglycemia and showed even greater benefits in subsets of CGM users. Disclosure P.Reaven: Research Support; AstraZeneca, Dexcom, Inc. M.Newell: Research Support; Dexcom, Inc. S.Rivas: None. X.Zhou: None. G.J.Norman: Employee; Dexcom, Inc. J.Zhou: Research Support; Dexcom, Inc. Funding DexCom, Inc |
