Table 3. Multivariate analysis for various predictive factors of EGFR mutation.

Parameters	Regression coefficients	P value	OR	95% CI
Female	1.713	<0.001*	5.545	2.816–10.920
CEA ≥7 ng/mL	0.735	0.038*	2.086	1.040–4.181
SUVmax <9	0.921	0.011*	2.511	1.236–5.102
Adenocarcinoma	1.402	0.017*	4.063	1.286–12.839
Age		0.864
Smoking status		0.121
Tumor grade		0.364

*, significance at P<0.05. OR, odds ratio; CI, confidence interval.