Table 4.

Most significant biomarkers for discriminating healthy controls, early-stage patients, and advanced-stage lung cancer patients.

	HMDB Number	AUC	P-value (ANOVA test)	P-value (Kruskal–Wallis test)
Palmitic acid	HMDB0000220	0.77	8.08E−16	1.99E−14
Heptadecanoic acid	HMDB0002259	0.75	5.02E−14	6.56E−13
Ornithine	HMDB0000214	0.73	2.80E−09	1.71E−10
Tridecanoic acid	HMDB0000910	0.73	4.08E−13	7.32E−12
Stearic acid	HMDB0000827	0.72	5.01E−11	2.51E−10