Fig. 1

ROC curves for PNI, SII, NLR, and PLR in EOC patients. The AUC for PNI was 0.814 (95% CI:0.744–0.883, P < 0.01). The AUC for SII was 0.814 (95% CI:0.746–0.881, P < 0.01). NLR had an AUC of 0.769 (95% CI: 0.694–0.843, P < 0.01). PLR had an AUC of 0.780 (95% CI: 0.707–0.853, P < 0.01). coPNI-SII had an AUC was 0.860 (95% CI: 0.800–0.921, P < 0.001). Abbreviations: EOC epithelial ovarian cancer,AUC Area under the curve,OS overall survival,SII systemic immune‐inflammation index,PNI prognostic nutritional index,NLR neutrophil‐to‐lymphocyte ratio,PLR platelet‐to‐lymphocyte ratio,coPNI-SII combination of SII and PNI