Trends in type 2 diabetes medication use and guideline adherence in Belgian primary care (2019-2023)

To assess the prevalence of atherosclerotic cardiovascular disease (ASCVD), heart failure (HF), and chronic kidney disease (CKD) among patients with type 2 diabetes (T2D) in Belgium. To analyze trends in medication use and adherence to guidelines from 2019 to 2023.

We conducted a retrospective cross-sectional analysis using data from the Intego primary care database, encompassing records from 431 general practitioners. We identified adults with T2D through diagnostic codes and glycated hemoglobin levels and analyzed subgroups with ASCVD, HF, and CKD for trends in medication use, particularly SGLT2 inhibitors (SGLT2-i) and GLP-1 receptor agonists (GLP-1).

The T2D population increased from 20,766 in 2019 to 21,764 in 2023. The prevalence of ASCVD, HF, and CKD among T2D patients slightly increased to 27 %, 6.7 %, and 23.7 % by 2023 (from 25.2 %, 4.9 % and 21.5 % respectively). Medication prescription trends showed a tripling of SGLT2-i and GLP-1 prescribing in the study period to 6.2 % and 11.5 % respectively. Despite these increases, only 7.5 % of eligible patients received these medications as of 2023.

The study highlights a growing burden of ASCVD, HF, and CKD among T2D patients in Belgium and an increase in the use of guideline-recommended medications. However, there remains a substantial gap in the optimal use of these therapies, indicating a need for improved implementation of clinical guidelines in primary care.