Table 1.

Relations of clinical and pathological characteristics and β-arrestin-2/CXCR2 in NSCLC patients

Characteristics	β-arrestin-2				CXCR2
	No. of patients		χ2	P value	No. of patients		χ2	P value
	Low	High			Low	High
Sex
Male	46	52	6.404	0.011	54	44	0.067	0.795
Female	27	11			20	18
Age*
>60	34	30	0.015	0.903	33	31	0.396	0.529
≥60	39	33			41	31
Smoking Index
Never	14	23	5.603	0.061	16	21	5.541	0.063
<400	17	9			19	7
≥400	42	31			39	34
Tumor differentiation
Well	15	16	5.644	0.059	13	18	2.562	0.278
Moderately	32	36			39	29
Poorly	26	11			22	15
Histology
Adenomas	49	26	9.138	0.003	39	36	0.392	0.531
Squamous	24	37			35	26
T stage
T1	33	22	1.485	0.223	28	27	0.457	0.499
T2-4	40	41			46	35
LN metastasis
Negative	37	12	14.685	<0.001	12	37	27.647	<0.001
Positive	36	51			62	25

Abbreviations: LN: lymph node.

*Age ranges from 18 to 75 years according to the inclusion criteria.