Supplementary Propensity-Matched Analysis
Given differences in baseline characteristics including age and type of operation performed, propensity score matching was also performed as a supplementary analysis. Samples were matched based on propensity score corresponding to patient age, history of hypertension, history of chronic lung disease, performance of hemiarch replacement, and performance of total arch replacement. Postoperative outcomes and long-term survival still did not differ between groups when analyzed in matched samples (Supplementary Tables 1 and 2; Supplementary Figure 1).