Association of prealbumin with risk of abdominal surgery and endoscopic recurrence in Crohn’s disease: A machine learning study

Figure 2 Kaplan-Meier and time-dependent receiver operating characteristic analyses of prealbumin for predicting abdominal surgery and postoperative endoscopic recurrence. A: Kaplan-Meier curve for surgery-free survival in the newly diagnosed cohort; B: Kaplan-Meier curve for recurrence-free survival in the surgical cohort; C and D: Kaplan-Meier curves for surgery-free survival (C) and recurrence-free survival (D) stratified by baseline prealbumin quartiles; E and F: Time-dependent receiver operating characteristic curves of prealbumin for predicting abdominal surgery (E) and postoperative endoscopic recurrence (F). P values were calculated using the log-rank test. AUC: Area under the receiver operating characteristic curve; PA: Prealbumin.