Comparing demographic/clinical characteristics, health care resource utilization, and costs among patients with type 2 diabetes and established atherosclerotic cardiovascular disease with and without the use of cardioprotective medications.

Abstract

Background: Type 2 diabetes (T2D) causes increased health care resource utilization (HCRU) and costs in the United States. People with T2D are more likely to have atherosclerotic cardiovascular disease (ASCVD), which is associated with significant morbidity and mortality. Medical associations recommend cardioprotective antidiabetic medications, including sodium-glucose cotransporter-2 inhibitors (SGLT2is) and glucagon-like peptide 1 receptor agonists (GLP-1 RAs), to reduce the risk of cardiovascular events in patients with T2D with established, or a high risk of, ASCVD, but not all eligible patients receive these medications.

Objective: To describe demographic/clinical characteristics and antidiabetic medication prescription patterns and compare HCRU and costs among patients with T2D and ASCVD with or without SGLT2i and/or GLP-1 RA use.

Methods: We conducted a retrospective cohort study using the Merative MarketScan database of longitudinal US health care claims data with patients enrolled from July 1, 2014, to December 31, 2022. Patients with T2D and ASCVD receiving SGLT2is and/or GLP-1 RAs (case cohort) were compared with patients with T2D and ASCVD not receiving SGLT2is and/or GLP-1 RAs (control cohort) during a 12-month baseline period pre-index and a 12-month follow-up period post-index. The index date was SGLT2i/GLP-1 RA prescription for the case cohort and random health care visit for the control cohort. Baseline patient characteristics are reported before propensity score matching (PSM); HCRU and medical costs are reported after PSM.

Results: Before PSM, each cohort included 3,386 patients; after PSM, each cohort included 2,351 patients. Patients in the case cohort were significantly more likely to experience myocardial infarction (case, 26.2%; control, 21.5%; P < 0.001) or peripheral artery disease (case, 28.6%; control, 26.1%; P < 0.024) during the baseline period. Patients in the case cohort had significantly lower baseline Charlson Comorbidity Index scores than patients in the control cohort (case, 1.8; control, 2.1; P < 0.001). Patients in the case cohort had significantly fewer all-cause inpatient visits per patient (case, 0.4; control, 0.6; P < 0.001) and all-cause emergency department visits per patient (case, 0.9; control, 1.0; P = 0.024). Patients in the case cohort had significantly lower all-cause inpatient costs (case, $13,977; control, $22,056; P < 0.001), other all-cause outpatient costs (case, $16,504; control, $24,739; P < 0.001), and all-cause total medical costs including pharmacy costs (case, $51,143; control, $58,648; P = 0.01) in the 12-month follow-up period.

Conclusions: Patients with T2D and ASCVD receiving SGLT2is and/or GLP-1 RAs within 12 months of ASCVD diagnosis may benefit from lower HCRU and costs.