Research Article

Analysis of Prognostic Factors for Resected Synchronous and Metachronous Liver Metastases from Colorectal Cancer

Figure 3

Kaplan-Meier curve of disease-free survival (DFS) () and overall survival (OS) () stratified by American Society of Anesthesiologists (ASA) score. Median DFS and OS for patients with ASA score 1-2 were 21.5 months (95% CI 12.4–67.8) and 67.8 months (95% CI 45.3–not evaluable [NE]), respectively, versus 12.6 (95% CI 7.2–22.4) and 62.6 months (95% CI 32–67.1), respectively, for those with ASA score 3 versus 10.9 (95% CI 1.3–19.2) and 20.5 months (95% CI 1.3–NE), respectively, for patients with ASA score 4.
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