Table 1.

Tissue levels of pIGF-1R/IR in case patients with NSCLC

Variable	Category	pIGF-1R/IR
		n	Mean ± SD	P
Smoking	Never	50	8.8 ± 29.18
	Former	134	28.28 ± 49.99	0.008
	Current	82	30.85 ± 50.08	0.027
Histology	Squamous	100	35.0 ± 53.04
	Adenocarcinoma	168	19.75 ± 47.29	0.019
EGFR	Mutant	25	8.0 ± 28.28
	Wild type	159	24.78 ± 48.63	0.066
K-Ras	Mutant	22	41.82 ± 53.06
	Wild type	157	20.83 ± 45.99	0.015

ANOVA test for smoking history, p-values comparing with never smoker.

Independent samples T-test for Histology

Mann-Whitney Test for EGFR mutation and K-Ras mutation.