Demographic data: characteristics of the study population classified according to eGFR group calculated using the CKD-EPI.

Abbreviations: CABG, coronary artery bypass graft; CAD, coronary artery disease; CCS, Canadian Cardiovascular Society; CHF, chronic heart failure; CKD-EPI, Chronic Kidney Disease–Epidemiology Collaboration; COPD, chronic obstructive pulmonary disease; eGFR, estimated glomerular filtration rate; NYHA, New York Heart Association; PCI, percutaneous coronary intervention; SD, standard deviation.ap-value tests for differences across eGFR groups.