Impact of cost on prescribing diabetes medications for older adults with type 2 diabetes in the outpatient setting.

Background: Newer diabetes medications have cardiorenal benefits beyond blood sugar lowering that make them a preferred treatment option in many patients. Despite this, studies have shown that prescribing of these medications remains suboptimal with medication costs being hypothesized as a reason for underutilization.

Objective: To understand clinicians' decision-making processes for prescribing diabetes medications in older adults, focusing on higher cost medications.

Methods: Observations of patient encounters and semi-structured interviews were conducted with clinicians from primary care, endocrinology, and geriatrics to elucidate themes into diabetes medication prescribing. A qualitative descriptive approach was used to analyze the data from interviews using an inductive coding scheme with themes derived from the data.

Results: Twenty-one interviews were conducted. Five themes were identified: 1) out-of-pocket costs drive prescribing decisions 2) out-of-pocket costs can be variable due to changing insurance plans or changing coverage 3) clinicians have difficulty with determining patient-specific out-of-pocket costs 4) clinicians manage the tradeoffs existing between cost, efficacy, and safety and 5) clinicians can use cost-modifying strategies such as patient assistance.

Conclusion: Addressing the challenges that medication costs pose to prescribing evidence-based medications for type 2 diabetes is necessary to optimize diabetes care for older adults.