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Univariate Cox regression analysis was used to evaluate the association between survival and gene expression in pancreatic cancer patients. The median expression value was used as the cutoff to divide the patients into high and low risk groups. Kaplan-Meier survival curves were constructed for patients in different risk groups, and the statistical significance of differences was assessed using the log-rank test (P<0.05). The tumor-free survival curves were plotted using the same strategy used for the Kaplan-Meier survival curves.
Copyright and License information: ©2019 Li et al.
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY) 3.0 License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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