Table 5.

A summary of a comparison of the perioperative stroke and death risk in previous studies. Some recently published series of CEAs for patients with ACCAS, especially from single institutions, demonstrated lower perioperative risk

Study	Stroke and death (%)
ACAS1) (1995, US)	2.3
MRC-ACST2) (2004, UK)	2.8
Woo et al.14) (2010, US)	1.4
Scavee et al.15) (2001, Belgium)†	0.9
Ballotta et al.16) (2007, Italy)†	0
Our study (2014, Japan)†	0.68

^†Study at a single institution.