Demographics and procedural characteristics of patients based on preoperative aspirin use.

BMI indicates body mass index; COPD, chronic obstructive pulmonary disease; Hb, hemoglobin; LIMA, left internal mammary artery; LVEDD, left ventricular end diastolic diameter; NYHA, New York Heart Association; PS, propensity score; RWMA, regional wall motion abnormity; SD, standard deviation *Variable included in the regression model for propensity score matching. Demographics and procedural characteristics of patients based on preoperative aspirin use.