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).