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Table 1 Patients characteristics of the training and validation sets

From: Radiomic analysis for predicting prognosis of colorectal cancer from preoperative 18F-FDG PET/CT

Characteristics Training set (n = 138) Validation set (n = 58) P value*
CEA 18.022 ± 41.604 25.928 ± 51.872 0.090
CA199    0.535
 High 36 12  
 Normal 102 46  
 Lymph nodes 2.326 ± 3.560 2.172 ± 3.320 0.804
Stage    0.486
 I 13 3  
 II 42 23  
 III 55 23  
 IV 28 9  
SUVmax 14.865 ± 6.100 13.430 ± 4.772 0.229
SUVmean 8.866 ± 3.539 8.091 ± 2.831 0.270
TLG 180.122 ± 163.749 168.098 ± 153.9764 0.887
  1. Continuous data except follow-up time (which was shown with median) were demonstrated with means ± standard deviations while categorical data were demonstrated with the number of each category and percentage. *p-value was calculated by using χ2 test for categorical variable and Wilcoxon test for continuous variable