Abstract

Presence of polyvascular disease, diabetes, heart failure, or renal insufficiency in patients with chronic coronary artery disease (CAD) and peripheral artery disease (PAD) are associated with increased risks of adverse events, including major adverse cardiovascular events (MACEs) and major adverse limb events (MALEs). In this retrospective observational study using administrative claims data from Optum's deidentified Clinformatics Data Mart Database from January 2016 to September 2021, we described the incidence rates of MACEs, MALEs, and major thrombotic vascular events in patients with CAD or PAD stratified by the presence of risk factors (i.e., polyvascular disease, diabetes, heart failure, or renal insufficiency). A total of 1,435,241 patients (77% CAD and 34% PAD) met the inclusion and exclusion criteria. Patients with 0 risk factors were deemed the low-risk group (47%; n=681,333) and patients with ≥1 risk factor were deemed the high-risk group (53%; n=753,908). The mean age was 71.8 and 73.6years, and 42% and 44% were female in the low- and high-risk groups, respectively. Compared with the low-risk group, the high-risk group had a 72% higher hazard of developing MACEs (adjusted hazard ratio 1.72, 95% confidence interval 1.70 to 1.74), 82% higher hazard of developing major thrombotic vascular events (1.82, 1.80 to 1.84), and 146% higher hazard of developing MALEs (2.46, 2.39 to 2.53) (all p <0.001). In conclusion, in patients with CAD or PAD, the presence of 1 or more risk factors was associated with higher risks of MACEs, MALEs, and major thrombotic vascular events, underscoring the need to improve management of underlying diseases in this population.

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