Table 2. Results of ROC curve analysis of validated differentially expressed proteins.

AUC: Area Under the ROC Curve.

		KNG1	AMBP	APOA2	AHSG	SERPINA1	HBB	CRP
IPF-Control	AUC	0.9325	0.9425	0.9425	0.94	0.8375	0.92	0.8825
	Std. Error	0.04847	0.04532	0.03743	0.03945	0.07434	0.04549	0.06245
	95% confidence interval	0.8375 to 1.028	0.8537 to 1.031	0.8691 to 1.016	0.8627 to 1.017	0.6918 to 0.9832	0.8308 to 1.009	0.7601 to 1.005
	P-value	< 0.0001	< 0.0001	< 0.0001	< 0.0001	0.0003	< 0.0001	< 0.0001
IPF-Sarcoidosis	AUC	0.9275	0.865	0.6675	0.825	0.705	0.6275	0.7
	Std. Error	0.04923	0.06445	0.08596	0.07362	0.101	0.09488	0.08315
	95% confidence interval	0.8310 to 1.024	0.7387 to 0.9913	0.4990 to 0.8360	0.6807 to 0.9693	0.5070 to 0.9030	0.4415 to 0.8135	0.5370 to 0.8630
	P-value	< 0.0001	< 0.0001	0.0699	0.0004	0.0265	0.1677	0.0305
IPF-HP	AUC	0.91	0.9025	0.6225	0.89	0.72	0.685	0.71
	Std. Error	0.05443	0.05604	0.08909	0.05512	0.09681	0.09353	0.08217
	95% confidence interval	0.8033 to 1.017	0.7926 to 1.012	0.4478 to 0.7972	0.7819 to 0.9981	0.5302 to 0.9098	0.5016 to 0.8684	0.5489 to 0.8711
	P-value	< 0.0001	< 0.0001	0.185	< 0.0001	0.0173	0.0453	0.0231