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Background The effect of obesity prior to percutaneous coronary intervention (PCI) on the development of end-stage renal disease (ESRD) is not clear. Methods Using nationally representative data from the Korean National Health Insurance System, we enrolled 140,164 subjects without renal disease at enrolment who underwent PCI between 2010 and 2015, and were followed-up until 2017. Patients were stratified into five levels based on their baseline body mass index (BMI) and six levels based on their waist circumference (WC; 5-cm increments). BMI and WC were measured at least 2 years prior to PCI. The primary outcome was the development of ESRD. Results During a median follow-up of 5.4 years, 2,082 (1.49%) participants developed ESRD. The underweight group (HR 1.331, 95%CI: 0.955–1.856) and low WC ( |
