Impact of single versus double vessel carotid disease on long-term survival in patients treated with carotid stenting

and double-vessel carotid disease groups, respectively. Survival free of all-cause mortality at 1, 3 and 5 years was 93% (95% CI, 89–96%), 85% (95% CI, 80–90%) and 77% (95% CI, 70–83%), and 89% (95% CI, 84–93%), 78% (95% CI 71–84%) and 69% (95% CI, 60–75%) for single-vessel and double-vessel carotid disease (p = 0.02), respectively (Fig. 1A). These observed mortality rates were significantly worse than the expected survival for the age- and sex-comparable general population (p b 0.01 for both groups) (Figs. 1 Ba nd1C). According to multivariate analysis, the independent predictors of all-cause mortality were left ventricular dysfunction (hazard ratio 3.01, 95% CI 1.88–4.82; p b 0.01), renal failure (hazard ratio 2.58, 95% CI 1.69–3.93; p b 0.01), and double-vessel carotid disease (hazard ratio 1.53, 95%