Histological response | Â | Non-CR | CR | Univariate | Multivariate |
---|---|---|---|---|---|
 |  |  |  | p-value | p-value |
Age |  | 63.6 ± 10.6 | 60.8 ± 9.6 | NS |  |
Sex | M | 25 | 4 | NS | Â |
 | F | 15 | 4 |  |  |
Tumor Size | ≥4 cm | 21 | 1 | 0.043 | 0.127 |
 | <4 cm | 19 | 7 |  |  |
Circumferential tumor extent | ≥60% | 21 | 1 | 0.043 |  |
 | <60% | 19 | 7 |  |  |
Distance from anal verge | ≥5 cm | 15 | 5 | NS |  |
 | <5 cm | 25 | 3 |  |  |
T stage | 2 | 12 | 1 | NS | Â |
 | ≥3 | 28 | 7 |  |  |
N stage | 0 | 26 | 7 | NS | Â |
 | 1 | 14 | 1 |  |  |
M stage | 0 | 38 | 8 | NS | Â |
 | 1 | 2 | 0 |  |  |
Serum level of CEA | ≥5 ng/ml | 20 | 5 | NS |  |
 | <5 ng/ml | 20 | 3 |  |  |
CD4 density | ≥78 | 17 | 7 | 0.015 |  |
 | <78 | 23 | 1 |  |  |
CD8 density | ≥54 | 17 | 7 | 0.015 | 0.0072 |
 | <54 | 23 | 1 |  |  |