Table 2.

The discrimination ability of ROC curves and nomograms

	Young LUAD patients		LUAD patients		Lung cancer patients
	AUC or C-Index	P value#	AUC or C-Index	P value	AUC or C-Index	P value
CD28	0.777	< 0.0001	0.594	0.001	0.556	0.007
PD-L1	0.713	0.007	0.531	0.256	0.547	0.025
PD-1	0.537	0.639	0.541	0.141	0.545	0.031
PD-L1 + CD28	0.81	< 0.0001	0.545	0.107	0.52	0.33
CD3	0.832	< 0.0001	0.574	0.008	0.554	0.01
CD8	0.506	0.942	0.626	0.345	0.535	0.095
CD3/CD8	0.814	< 0.0001	0.531	0.259	0.549	0.018
Nomograms	0.913		0.678		0.625

#: P value here refers to statistical significance between AUC (area under ROC curve) area and 0.5