Association of hypoglycaemia severity with clinical, patient-reported and economic outcomes in US patients with type 2 diabetes using basal insulin

Aims: To evaluate the clinical and patient-reported outcomes and healthcare utilization and costs associated with patient-reported hypoglycaemia in US adults with type 2 diabetes (T2D) treated with basal insulin. Materials and methods: This was an observational, cross-sectional, survey-based study of adults with T2D on basal insulin ± oral antidiabetes drugs (OADs) or rapid-acting/premixed insulin, who had in the past ever experienced hypoglycaemia, using US data from the National Health and Wellness Survey. Eligible patients were categorized as having no hypoglycaemia (38.7%), non-severe hypoglycaemia (55.1%), or severe hypoglycaemia (6.2%) in the preceding 3 months. Outcomes included health-related quality of life (HRQoL), work productivity and activity impairment, healthcare resource utilization, and estimated direct and indirect costs. Multivariable regression models were performed to control for patient characteristics. Results: Patients who experienced severe hypoglycaemia had significantly (P <.05) lower HRQoL scores, greater overall impairment of work productivity and activity, greater healthcare resource utilization, and higher costs compared with those who experienced non-severe or no hypoglycaemia. Patients with non-severe hypoglycaemia also reported an impact on the number of provider visits, indirect costs, and HRQoL. Conclusions: Patients with T2D using basal insulin ± OADs or rapid-acting/premixed insulin in the United States who experienced severe hypoglycaemia had greater impairment of activity and work productivity, utilized more healthcare resources, and incurred higher associated costs than those with non-severe or no hypoglycaemia. The study also demonstrated the impact that non-severe hypoglycaemic events have on economic and HRQoL outcomes. Reducing the incidence and severity of hypoglycaemia could lead to clinically meaningful improvements in HRQoL and may result in lower healthcare utilization and associated costs.