Figure 4From: Peri-operative chemotherapy for the treatment of resectable liver metastases from colorectal cancer: A systematic review and meta-analysis of randomized trials Recurrence-free survival. Recurrence-free survival with peri-operative adjuvant chemotherapy compared with surgery alone. The summary hazard ratio (HR) was 0.77 (95% CI; 0.67- 0.88; P = 0.0001) for peri-operative chemotherapy compared with surgery alone.Back to article page