Fig. 4From: A nomogram model for predicting prognosis of obstructive colorectal cancerThe calibration curves for predicting patient OS at a 1 year and b 3 years in the internal verification and c 1 year and d 3 years in the external verification. The OS predicted by the nomogram model is plotted on the x-axis, and the actual OS is plotted on the y-axis. OS, overall survivalBack to article page