Construction and Validation of a Lung Cancer Diagnostic Model Based on 6-Gene Methylation Frequency in Blood, Clinical Features, and Serum Tumor Markers

Table 3

Serum tumor marker levels of samples [].

Serum tumor markers	Lung cancer patients ()	Healthy subjects ()
CEA (ng/mL)	5.63 (2.83, 25.36)	1.93 (1.18, 3.51)	<0.05
CYFRA21-1 (ng/mL)	3.97 (2.50, 7.43)	1.99 (1.39, 2.49)	<0.05
SCCA (ng/mL)	1.35 (0.86, 2.70)	0.91 (0.62, 1.19)	<0.05
CA125 (U/mL)	38.21 (15.71, 85.50)	11.23 (8.00, 16.12)	<0.05