A comparison of clinical pharmacist management of type 2 diabetes versus usual care in a federally qualified health center
Main Article Content
Keywords
Diabetes Mellitus, Type 2, Insulin, Glycated Hemoglobin A, Disease Management, Pharmaceutical Services, Pharmacists, Community Health Centers, Patient Outcome Assessment, Comparative Effectiveness Research, Retrospective Studies, United States
Abstract
Background: Clinical pharmacists have demonstrated their ability to improve patient outcomes over usual care for patients with type 2 diabetes and glycemic levels above goal, though reasons for this are not well defined. Numerous medications exist for the management of patients with type 2 diabetes and different patterns of medication use by clinical pharmacists may explain these benefits.
Objective: The objective of this study was to compare pharmacotherapy approaches to managing patients with uncontrolled type 2 diabetes receiving basal insulin by a clinical pharmacist versus usual care by a physician or advanced practice provider in a federally qualified health center.
Methods: A retrospective cohort study of patients 18 to 85 years old with type 2 diabetes, A1C ≥9%, receiving basal insulin was conducted. Patients were grouped into two cohorts: (1) those who received clinical pharmacist care and (2) those who received usual care from a physician or advanced practice provider. The primary outcome evaluated the proportion of patients treated with the addition of a non-basal insulin medication. Type of medication changes or additions as well as change in A1C and change in weight were also analyzed. Outcomes were evaluated at six months post-index A1C.
Results: A total of 202 patients were identified (n=129 in the usual care group and n=73 in the clinical pharmacist group). A non-basal insulin medication was added in 29% of patients receiving usual care versus 41% of patients receiving clinical pharmacist care (adjusted p=0.040). Usual care providers more frequently added metformin, sulfonylureas and thiazolidinediones, while clinical pharmacists more frequently added prandial insulin, DPP-4 inhibitors, GLP-1 agonists, and SGLT-2 inhibitors. A1C decreased 1.6% in the clinical pharmacist group versus 0.9% in the usual care group (adjusted p=0.055). No significant change in weight was observed between the clinical pharmacist and usual care group (0.2 kg versus -1.0 kg, respectively; adjusted p=0.175).
Conclusions: Pharmacotherapy approaches to managing patients with uncontrolled type 2 diabetes varied between clinical pharmacists and other clinician providers. For patients already on basal insulin, clinical pharmacists were more likely to intensify therapy with the addition of non-basal insulin, including more frequent initiation of prandial insulin and by adding newer antihyperglycemic agents.
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