RESULTS	For procedures performed exclusively by vascular surgeons , the primary end point did not differ between CAS and CEA at 4-year follow-up ( 6.2 % vs 5.6 % , respectively ; hazard ratio [ HR ] , 1.30 ; 95 % confidence interval [ CI ] , 0.70-2 .41 ; P = .41 ) In this subgroup , the periprocedural stroke and death rates were higher after CAS than CEA for symptomatic patients ( 6.1 % vs 1.3 % ; P = .01 ) .\