Table 2. Clinical variables for predicting EGFR activating mutations: Multiple logistic regression analysis results.

Variables	ORs	95% CIs	P
Family history of lung cancer (yes v no)	2.01	1.18–3.60	0.011
Age (increasing)	1.00	0.98–1.01	0.947
Gender (female v male)	2.07	1.20–3.61	0.011
Smoking habit (never v ever smoker)	2.64	1.50–4.67	0.001
ECOG performance status (0–1 v 2–4)	0.97	0.65–1.46	0.893
Body mass index (< 22.4 v ≥ 22.4)	1.03	0.72–1.47	0.872
Histology (adenocarcinoma v non-adenocarcinoma)	3.60	2.31–5.60	< 0.001
Stages (I and II v III and IV)	1.23	0.84–1.81	0.291

ECOG = Eastern Cooperative Oncology Group; Body mass index by 22.4 of median value