JOURNAL ARTICLE

Cardiovascular Outcomes of Dipeptidyl Peptidase-4 Inhibitors in Elderly Patients With Type 2 Diabetes: A Nationwide Study

Chia-Jen Shih, Hung-Ta Chen, Shu-Chen Kuo, Shuo-Ming Ou, Yung-Tai Chen
Journal of the American Medical Directors Association 2016, 17 (1): 59-64
26612484

OBJECTIVES: The elderly (aged ≥65 years) population with type 2 diabetes (T2D) is growing substantially, but evidence for associations between the use of dipeptidyl peptidase-4 inhibitors (DPP-4is), novel incretin-based antidiabetic drugs, and clinical hard endpoints in this group remains inconclusive. We aimed to assess the safety and cardiovascular effects of DPP-4i use in a nationally representative sample of elderly adults with T2D.

DESIGN, SETTING, AND PARTICIPANTS: We conducted a nationwide, observational, propensity score-matched study using Taiwan's National Health Insurance Research Database. Of a total of 414,213 patients aged ≥65 years with T2D, 58,485 patients receiving initial DPP-4i prescriptions between March 1, 2009, and June 31, 2013, were included. Each DPP-4i user was matched with a nonuser control using propensity scores. The endpoints were all-cause mortality and major adverse cardiovascular events (MACEs), including ischemic stroke and myocardial infarction. Potential adverse effects of hospitalization for heart failure and hypoglycemia were also evaluated.

RESULTS: Compared with the matched control cohort, the risks of all-cause mortality (hazard ratio [HR] 0.54, 95% confidence interval [CI] 0.52-0.56), MACEs (HR 0.79, 95% CI 0.75-0.83), myocardial infarction (HR 0.79, 95% CI 0.72-0.87), and ischemic stroke (HR 0.79, 95% CI 0.75-0.84) were lower in the DPP-4i cohort. DPP-4i use did not affect the risks of hospitalization for heart failure and hypoglycemia. Stratified analyses produced consistent results across age, sex, and comorbidity subgroups.

CONCLUSIONS: Prescription of DPP-4is was associated with reduced risks of all-cause mortality and MACEs in patients aged ≥65 years with T2D.

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