Exploring Clinical Care Among Adults With Diabetes Mellitus: Alignment With Recommended Statin and Sulfonylureas Treatment

Abstract

Objectives: The care of patients with diabetes mellitus (DM), compiled in the 2008 Canadian Diabetes Association clinical practice guidelines and in recommendations from the Choosing Wisely Canada program, is informed by a large body of evidence. This study sought to assess to what extent primary care providers (PCPs) incorporate recommended statin and sulfonylureas treatment in their care of patients with DM, and to identify the association between use of recommended care and PCP characteristics.

Methods: This retrospective cohort study (2007-2017) used electronic medical records of 21,149 patients with DM receiving care from 240 PCPs participating in the Manitoba Primary Care Research Network.

Results: PCPs prescribed statins to patients newly diagnosed with DM who were ≥40 years of age 41% of the time, with 45% of the prescriptions occurring ≤180 days after a new diagnosis (early treatment). PCPs least likely to prescribe recommended statin treatment had higher odds of being older (adjusted odds ratio [aOR], 1.05; 95% confidence interval [CI], 1.01 to 1.09) and fee-for-service funded (aOR, 4.36; 95% CI, 1.47 to 12.91). In addition, older PCPs (aOR, 1.06; 95% CI, 1.02 to 1.10) and women (aOR, 2.42; 95% CI, 1.11 to 5.28) were less likely to prescribe statin treatment early. Seventy-four percent of PCPs prescribed sulfonylureas to adults ≥65 years of age. No PCP characteristics were associated with prescription of sulfonylureas in the lower implementation quartile in the fully adjusted model.

Conclusions: Results suggest that PCPs' practice does not always align with current evidence-based clinical guidelines or Choosing Wisely Canada recommendations for patients with DM. Some PCP's characteristics were associated with lower implementation of recommended evidence-based care. This information can help guide future targeted medical education.

Keywords: clinical guidelines; diabetes; evidence-based practice; lignes directrices de pratique clinique; pratique fondée sur des données probantes; primary care; soins primaires; statines; statins; sulfonylureas; sulfonylurées.