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. 2019 Jun 10;17:193. doi: 10.1186/s12967-019-1940-1

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Nomogram and calibration curves for predicting lymph node metastasis and liver metastasis in patients with early colon carcinoma. There are seven factors in the lymph node metastasis prediction nomogram (a) and five factors in the liver metastasis prediction nomogram (b). Calibration curves for predicting lymph node metastasis and liver metastasis in the training set (c, e) and in the testing set (d, f) are shown. All the points assigned on the top point scale for each factor are summed together to generate a total point score. The total point score is projected on the bottom scales to determine the probability of cancer metastasis in an individual. The nomogram-predicted frequency of metastasis is plotted on the x-axis, and the actual observed frequency of metastasis is plotted on the y-axis