Postoperative adjuvant PD-1 immunotherapy survival and body-mass-index dynamics in esophageal cancer: A real-world retrospective study

Figure 3 Progression-free survival curves for populations of each variable. A: Body mass index difference; B: Preoperative lymphocyte count; C: Preoperative neutrophil-to-lymphocyte ratio; D: Time interval between surgery and start of first immunotherapy. NLR: Ratio of neutrophils to lymphocytes; L1: Preoperative lymphocyte count; dv: Difference between the index at the beginning of the first immunotherapy minus the index before surgery; BMI: Body mass index.