Limitations
This study has several limitations. Though data collection is prospective, analysis is retrospective in nature. This multicenter dataset relies solely on accurate site reporting. However, important morphologic variables related to the carotid arteries have been collected the study was adequately powered. Therefore, prospective evaluation of the risk score is needed to clarify its utility for risk stratification and decision-making. There is the risk of sampling bias as this is a selected cohort of patients undergoing repair with other techniques were not included for comparison. Nevertheless, this reflects the careful selection process in our cases as well as the homogeneity of the cohort among these centers. Also, the low adverse event rate did not allow for meaningful multivariate analysis as well as subgroup analyses. Despite these limitations, this data compares well with the available literature owing to the consistency and homogeneity of the data. Even so, these limitations may not allow for generalizability of our findings.