3.1. General characteristics of patients in the training set
±
DISEASE
A total of 240 patients with CD were included in this study. Among them, 168 (70%) were in the training set, and 72 (30%) were in the validation set. Of the 168 patients with CD, 139 (82.73%) were male, and 29 (17.27%) were female. The average disease duration was 7 months (range: 1–36 months) from the diagnosis of CD to the first surgical treatment. The mean BMI was 21.32 ± 5.24 kg/m