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. 2020 Dec 1;31(12):936–941. doi: 10.5152/tjg.2020.19954

Figure 1.

Figure 1

The depth of the decision tree was three levels. In the first level, patients were divided into two categories according to NRBC (parent node). In the second level, patients with a negative test result for NRBCs were divided into two categories according to CCI. According to APACHE II, patients with a positive test result for NRBCs were divided into two categories. Patients with APACHE II ≤ 30 in level 3 were divided into two categories according to Ranson score. Cutoff points of the second level and the third level were defined as child nodes, including CCI, APACHE II and Ranson score.