Continuous data are reported as median (I, III quartiles); categorical data are reported as a percentage and absolute frequencies. The P values are adjusted after propensity score weighting. ICU: intensive care unit. * Permanent neurologic deficit was defined as the presence of stroke, motor deficit (confirmed at CT/MRI control) or coma; ** Transient neurologic dysfunction was defined as the presence of reversible postoperative deficit before discharge, including confusion, delirium and motor deficits with no signs of stroke at computed tomography (CT) scan.