Table 1.
Associations between CXCR2 expression and clinical background factors
| Factors | All patients | CXCR2-positive | CXCR2-negative | p value |
|---|---|---|---|---|
| (n = 82) | (n = 33) | (n = 49) | ||
| Age (years) | 0.81 | |||
| ≦49 | 3 (3.7 %) | 1 (3.0 %) | 2 (4.1 %) | |
| 50–59 | 40 (48.8 %) | 17 (51.5 %) | 23 (46.9 %) | |
| 60–69 | 31 (37.8 %) | 13 (39.4 %) | 18 (36.7 %) | |
| ≧70 | 8 (9.8 %) | 2 (6.1 %) | 6 (12.2 %) | |
| Sex | 0.33 | |||
| Male | 73 (89.0 %) | 28 (84.8 %) | 45 (91.8 %) | |
| Female | 9 (11.0 %) | 5 (15.2 %) | 4 (8.2 %) | |
| Location | 0.60 | |||
| Upper | 7 (8.5 %) | 2 (6.1 %) | 5 (10.2 %) | |
| Middle | 52 (63.4 %) | 20 (60.6 %) | 32 (65.3 %) | |
| Lower | 23 (28.0 %) | 11 (33.3 %) | 12 (24.5 %) | |
| Approach | 0.82 | |||
| Thoracotomy | 61 (74.4 %) | 25 (75.8 %) | 36 (73.5 %) | |
| Thoracoscopy | 21 (25.6 %) | 8 (24.2 %) | 13 (26.5 %) | |
| Adjuvant therapy | 0.58 | |||
| None | 71 (86.6 %) | 27 (81.8 %) | 44 (89.8 %) | |
| Chemotherapy | 9 (11.0 %) | 5 (15.2 %) | 4 (8.2 %) | |
| Chemoradiotherapy | 2 (2.4 %) | 1 (3.0 %) | 1 (2.0 %) |