Abstract

Sex differences in clinical outcomes have been observed for patients with type 2 diabetes mellitus (T2DM). These could be related to sex disparities in treatment. To determine whether there are sex disparities in medication prescribing amongst patients with T2DM. A cohort study was conducted using the Groningen Initiative to ANalyze Type 2 diabetes Treatment (GIANTT) database, which includes data from primary care patients with T2DM from the north of the Netherlands. Data on demographics, physical examinations, laboratory measurements and prescribing were extracted. A set of validated prescribing quality indicators assessing the prevalence, start, intensification and safety of glucose-, lipid-, blood pressure- and albuminuria-lowering medication was applied for the calendar year 2019. Univariate logistic regression analyses were conducted. We included 10,456 patients (47% females). Females were less often treated with metformin (81.7% vs. 86.5%; OR 0.70, 95% CI 0.61-0.80), and were less often prescribed a renin-angiotensin-aldosterone inhibitor (RAAS-i) when treated with multiple blood pressure-lowering medicines (81.9% vs. 89.3%; OR 0.55, 95% CI 0.46-0.64) or when having albuminuria (74.7% vs. 82.1%; OR 0.64, 95% CI 0.49-0.85) than males. Statin treatment was less frequently started (19.7% vs. 24.7%; OR 0.75, 95% CI 0.58-0.96) and prescribed (58.7% vs. 63.9%; OR 0.80, 95% CI 0.73-0.89) in females. There were no differences in starting and intensifying glucose-, blood pressure- and albuminuria-lowering medication. Sex disparities in medication prescribing amongst T2DM patients were seen, including less starting with statins and potential undertreatment with RAAS-i in females. Such disparities may partly explain higher excess risks for cardiovascular and renal complications associated with diabetes observed in females.

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