Fig. 2

Comparisons of predictive values of the systemic nutrition-inflammation index (SNII) and selected established nutrition/inflammation indicators for perioperative endpoints. Receiver operating characteristic (ROC) curves were utilized to evaluate the predictive values of these indicators for the incidence of postoperative complications, unscheduled readmissions within 30 days, and 90-day mortality. Time-dependent ROC curves were employed to assess the predictive value of these indicators concerning the length of postoperative hospital stay (at the 8-day timepoint) and chest tube duration (at the 6-day timepoint). AGR, albumin-to-globulin ratio; AUC, area under the curve; CONUT, controlling nutritional status score; LMR, lymphocyte-to-monocyte ratio; NLR, neutrophil-to-lymphocyte ratio; SIRI, systemic inflammation response index