Factors Requiring Adjustment in the Interpretation of Serum Carcinoembryonic Antigen: A Cross-Sectional Study of 18,131 Healthy Nonsmokers

Table 3

Multivariate analysis of quartile CEA.

	Total population		Training set	Test set
	Odds ratio (95% confidence interval)	value	value	value
Gender (reference: male)	0.668 (0.569–0.784)	0.000	0.000	0.003
Age	1.037 (1.033–1.042)	0.000	0.000	0.000
BMI	0.957 (0.940–0.974)	0.000	0.000	0.005
WBC	1.058 (1.024–1.093)	0.001	0.074	0.003
HB	1.141 (1.089–1.195)	0.000	0.000	0.000
AST	1.011 (1.005–1.018)	0.000	0.025	0.007
Creatinine	1.54 (1.017–2.335)	0.042	0.134	0.162
HbA1c	1.461 (1.329–1.611)	0.000	0.000	0.000