Comparison between epidural and intravenous analgesia effects on disease-free survival after colorectal cancer surgery: a randomised multicentre controlled trial.

Time to RIOT was slightly shorter (median [IQR] 44 [33–54.5] vs 48 [36.5–57] days), and a greater proportion of subjects could start adjuvant chemotherapy within 8 weeks postoperatively (82% vs 74%) in group TEA compared with group PCA ( Table 3 ); however, these differences did not reach statistical significance.

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