Table 1 Clinical characteristics of the two groups
|  | CCRT + E group (n = 43) | CCRT group (n = 45) | P value |
|---|---|---|---|
Average age (range) | 44.7 years (27–64) | 43.6 years (24–66) | 0.515 |
Sex | Â | Â | Â |
 Men | 29 (67.4%) | 32 (71.1%) | 0.709 |
 Women | 14 (32.6%) | 13 (28.9%) | |
Clinical stage (7th,UICC/AJCC) | Â | Â | 0.955 |
 III | 16 (37.2%) | 15 (33.3%) | |
 IVa | 22 (51.2%) | 24 (53.3%) | |
 IVb | 5 (11.6%) | 6 (13.3%) | |
T stage | Â | Â | 0.609 |
 T1 | 0 (0) | 0 (0) | |
 T2 | 2 (4.7%) | 5 (11.1%) | |
 T3 | 16 (37.2%) | 15 (33.3%) | |
 T4 | 25 (58.1%) | 25 (55.6%) | |
N stage | Â | Â | 0.312 |
 N0 | 0 (0) | 0 (0) | |
 N1 | 21 (48.8%) | 28 (62.2%) | |
 N2 | 17 (39.5%) | 11 (24.4%) | |
 N3 | 5 (11.6%) | 6 (13.3%) |