Onodera's Prognostic Nutritional Index is a novel and useful prognostic marker for gastrointestinal stromal tumors

Table 2 Receiver operator characteristic analyses for neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, Onodera’s Prognostic Nutritional Index, and ki-67 index

	NLR	PLR	OPNI	Ki-67 index
Cut-off point	4.34	220.76	51.30	2.5%
Sensitivity% (95%CI)	35.00 (25.73-45.19)	49.00 (38.86-59.20)	76.00 (66.43-83.98)	63.00 (52.76-72.44)
Specificity% (95%CI)	88.15 (81.47-93.07)	88.15 (81.47-93.07)	77.04 (69.02-83.83)	58.52 (49.73-66.93)
Youden Index	0.2315	0.3715	0.5304	0.2152
AUC (95%CI)	0.6308 (0.5584-0.7031)	0.6820 (0.6096-0.7545)	0.7999 (0.7420-0.8578)	0.6237 (0.5514-0.6960)
P value	0.0006	< 0.0001	< 0.0001	0.0012

NLR: Neutrophil-to-lymphocyte ratio; PLR: Platelet-to-lymphocyte ratio; OPNI: Onodera’s Prognostic Nutritional Index; AUC: Area under the curve.