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Selecting the number of categories of the lymph node ratio in cancer research: A bootstrap-based hypothesis test
The high impact of the lymph node ratio as a prognostic factor is widely established in colorectal cancer, and is being used as a categorized predictor variable in several studies. However, the cut-off points as well as ...
Bootstrap-based procedures for inference in nonparametric receiver-operating characteristic curve regression analysis
Prior to using a diagnostic test in a routine clinical setting, the rigorous evaluation of its diagnostic accuracy is essential. The receiver-operating characteristic curve is the measure of accuracy most widely used for ...