Table 1. Demographic characteristics of the patients.

	Adenocarcinoma (n=66)			Squamous cell carcinoma (n=61)			Large cell carcinoma (n=64)			Total (n=191)			p
	n	%	Mean±SD	n	%	Mean±SD	n	%	Mean±SD	n	%	Mean±SD
Age (year)			59.9±7.4			63.2±8.1			58.1 ±9.1			60.3±8.4	0.002
<65	53	80.3		34	55.7		49	76.6		136	71.2		0.005
>65	13	19.7		27	44.3		15	23.4		55	28.8
Sex													0.098
Female	10	15.2		3	4.9		6	9.4		19	10
Male	56	84.8		58	95.1		58	90.6		172	90
Tobacco use													0.040
No	15	22.7		4	13.8		10	15.6		29	15.2
Yes	51	77.3		57	93.4		54	84.4		162	84.8
Tumor size (cm)			3.8±1.9			4.3±2.3			4.6±2.2			4.2±2.2	0.095
Neoadjuvant therapy													0.48
No	57	86.3		51	83.6		58	90.6		166	87
Yes	9	13.6		10	16.4		6	9.4		25	13
Resection type													0.009
Lobectomy	55	83.3		39	63.9		47	73.4		141	73.8
Bi lobectomy	6	9.1		5	8.2		1	1.6		12	6.2
Pneumonectomy	5	7.6		17	27.9		16	25		38	20
Stage													0.59
I	21	31.8		25	41.0		25	39.1		80	41.9
II	26	39.4		13	21.3		20	31.2		50	26.2
III	19	28.8		23	37.7		19	29.7		61	31.9
Presence of necrosis													0.01
No	52	78.8		24	39.3		27	40.3		103	53.9
Yes	14	21.2		37	60.7		37	59.7		88	46.1
SD: Standard deviation.