Table-I.

A comparative analysis of the experimental group with control group in general data (X̅ ±S) n=40.

Indicator	Experimental Group	Control Group	t/χ2	P
Age (year)	59.47±11.28	58.11±10.74	0.55	0.58
Male (ratio %)	27(67.5%)	25(62.5%)	0.22	0.64
Pathological pattern
Adenocarcinoma	21(52.5%)	22(55%)	0.05	0.82
Squamous cancer	15(37.5%)	13(32.5%)	0.22	0.64
Others	4(10%)	5(12.5%)	0.13	0.72
Location of tumor
Peripheral	25(62.5%)	23(57.5%)	0.21	0.65
Central	15(37.5%)	17(42.5%)	0.20	0.64
Clinical stage
III	27(67.5%)	25(62.5%)	0.22	0.64
IV	13(32.5%)	15(37.5%)	0.26	0.59

P>0.05.