Abstract
A health economic analysis was conducted to determine the cost-effectiveness of a real-time continuous glucose monitoring (rt-CGM) system versus self-monitoring of blood glucose (SMBG) in Type 2 diabetes (T2D) patients treated with insulin. The IQVIA CORE diabetes model was utilized for the analysis. Clinical data were sourced from a US retrospective cohort study of adult T2D patients on insulin and adapted to Canada. The baseline mean age (SD) of the cohort was 61 years (13.2) and proportion of male 49%. Mean baseline HbA1c for the cohort was 8.3% (67 mmol/mol) . Patients using rt-CGM were assumed to have a reduction in HbA1c of -0.56% based on the mean difference between groups after 12-months follow-up. A quality-of-life (QoL) benefit associated with reduced finger-stick testing was applied. The analysis was conducted from the Canadian Agency for Drugs and Technologies in Health perspective over a lifetime horizon. The rt-CGM system was associated with an incremental gain of 0.97 quality-adjusted life years (QALYs) compared with SMBG (mean [SD] 10.35 [3.08] versus 9.375 [2.85] QALYs) . Total mean [SD] lifetime costs were CAN$ 17,223 higher with rt-CGM (CAN$ 206,284 [121,493] versus 189,061 [129.680]) , resulting in an incremental cost-effectiveness ratio of CAN$ 17,652 per QALY gained. Sensitivity analyses demonstrated findings were sensitive to changes in QoL, HbA1c, younger patient cohorts, and rt-CGM cost. Varying rt-CGM cost to -25% of base case yielded an ICER of CAN$ 3,512, and varying rt-CGM cost to -50% of base case the ICER becomes dominant over SMBG. For T2D patients on insulin, rt-CGM was associated with significant clinical outcomes and is a cost-effective management option relative to SMBG based on a willingness-to-pay threshold of CAN$ 50,000 per QALY gained. Disclosure J.J.Isitt: Consultant; Dexcom, Inc. S.Roze: None. G.Cogswell: None. P.M.Lynch: Employee; Dexcom, Inc., Stock/Shareholder; Dexcom, Inc.
Published Version
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