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. 2013 Jul 23;8(7):e69039. doi: 10.1371/journal.pone.0069039

Figure 1. Kaplan-Meier estimates of the effect of coexisting XRCC1 and XPD allelic variants on overall survival in colorectal cancer patients stratified by tumor site and tumor-node-metastasis stage.

Figure 1

(a) The survival curve of stage II/III colon cancer patients (overall log-rank test P = 0.087). (b) The survival curve of stage II/III rectal cancer patients (overall log-rank test P = 0.021).