<p>Kaplan-Meier survival analysis.</p>

OS estimates based on the CD grade ≥ III or ≤ II: The 5-year OS rate was 52.0% in the no or minor complication group (median OS: not reached) and 15.0% in the major complication group (median OS: 619 days). Although the difference was not statistically significant, there was a trend toward worse OS in the major complication group (P = 0.063). b.

RFS estimates based on the CD grade ≥ III or ≤ II: The 5-year RFS rate was 44.5% in the no or minor complication group (median RFS: 337 days) and could not be calculated in the major complication group, as no patients remained event-free until 5 years after the operation (median RFS: 802 days). RFS was significantly worse in the major complication group (P = 0.004).</p>