Kaplan-Meier curves of disease-free survival, with numbers of subjects
at risk shown in different study groups (SGs) for patients who received at least
1 chemotherapy cycle, either as consolidation chemotherapy after
chemoradiotherapy (CRT), as adjuvant chemotherapy after total mesorectal
excision (TME), or both. SG1, CRT + TME + ≥1 cycle of adjuvant
chemotherapy; SG2, CRT + mFOLFOX6 (two cycles) + TME +/− adjuvant
chemotherapy; SG3, CRT + mFOLFOX6 (four cycles) + TME +/− adjuvant
chemotherapy; SG4, CRT + mFOLFOX6 (six cycles) + TME +/− adjuvant
chemotherapy.