Table 1 Clinical and pathological features of patients in ESCC microarray cohort and correlations of CCL18 expression levels
Clinical features | N | CCL18 expression level | P value* | |
|---|---|---|---|---|
Low N (%) | High N (%) | |||
Tumor location a | ||||
 Upper | 22 | 15 (17.6) | 7 (8.3) | 0.435 |
 Middle | 39 | 20 (23.8) | 19 (22.6) |  |
 Lower | 22 | 13 (15.5) | 9 (10.7) |  |
Tumor differentiation | ||||
 Well | 25 | 14 (16.7) | 11 (13.1) | 0.569 |
 Moderate | 43 | 23 (27.4) | 20 (23.8) |  |
 Poor | 16 | 11 (13.1) | 5 (6.0) |  |
Pathological stage | ||||
 IA-IB | 26 | 20 (23.8) | 6 (7.1) | 0.043 |
 IIA-IIB | 29 | 15 (17.6) | 14 (16.7) |  |
 IIIA-IIIC | 29 | 13 (15.5) | 16 (19.0) |  |
Tumor stage | ||||
 T1-T2 | 39 | 31 (36.9) | 8 (9.5) | 0.0001 |
 T3-T4 | 45 | 17 (20.2) | 28 (33.3) |  |
Nodal stage | ||||
 N = 0 | 48 | 29 (34.5) | 19 (22.6) | 0.484 |
 N > 0 | 36 | 19 (22.6) | 17 (20.2) |  |