Table 2.

Effect of carotid endarterectomy on outcomes: results of meta-analysis

Outcome	Surgical group (%)	Medical group (%)	Odds ratio* (95% CI)
Ipsilateral stroke plus perioperative stroke or death	4.4	6.4	0.62 (0.44 to 0.86)
Ipsilateral stroke plus perioperative ipsilateral stroke	3.2	6.2	0.46 (0.32 to 0.66)
All stroke plus perioperative stroke or death	7.4	9.2	0.68 (0.51 to 0.90)
Perioperative stroke or death	2.4	0.4	4.51 (2.36 to 8.64)

^*Fixed effect model (Peto’s method) was used to derive pooled estimates for rates of ipsilateral stroke, all stroke, and perioperative stroke or death. These rates were calculated by adjusting for different sample sizes across the trials included in the meta-analysis.