Table 6.

Logistic regression analyses of various predictive factors for EGFR mutation in adenocarcinoma.

Variables	B	Wald X2	P value	OR	95% CI
Gender	0.538	6.076	0.014	1.713	1.117–2.628
Smoking status	− 0.586	6.690	0.010	0.557	0.357–0.868
Lepidic predominant$	0.493	1.495	0.221	1.637	0.743–3.609
lymphatic metastasis	− 0.189	0.993	0.319	1.208	0.833–1.751
maximum diameter	0.000	0.003	0.957	1.000	0.989–1.012
Type	− 0.188	0.271	0.603	0.829	0.408–1.683
Texture	1.110	18.935	0.000	3.035	1.841–5.004
Air bronchograms	0.648	12.566	0.000	1.912	1.336–2.737
Margin	0.062	0.104	0.747	1.063	0.732–1.545
Pleural retraction	0.781	20.502	0.000	2.183	1.557–3.061
lymphadenopathy	− 0.307	2.005	0.157	0.736	0.481–1.125

OR odds ratio; CI confidence interval.

^$Lepidic predominant includes adenocarcinoma in situ, minimally invasive adenocarcinoma, and lepidic predominant invasive adenocarcinoma.