Factors | N | I-LVD | P-LVD | ||
---|---|---|---|---|---|
 |  | mean ± SD | P | mean ± SD | P |
Tumor differentiation | Â | Â | 0.802 | Â | 0.739 |
   High differentiated | 11 | 8.18 ± 2.44 |  | 12.07 ± 4.49 |  |
   Mederately/poor differentiated | 112 | 8.00 ± 2.27 |  | 12.46 ± 3.60 |  |
Tumor size | Â | Â | <0.001 | Â | <0.001 |
   <3.2 cm | 57 | 8.93 ± 2.34 |  | 11.18 ± 3.80 |  |
   ≥ 3.2 cm | 66 | 7.23 ± 1.91 |  | 13.50 ± 3.21 |  |
Depth of invasion | Â | Â | 0.433 | Â | 0.026 |
   pT1-2 | 69 | 8.16 ± 2.51 |  | 11.78 ± 3.52 |  |
   pT3-4 | 54 | 7.83 ± 1.96 |  | 13.26 ± 3.71 |  |
Lymph node metastasis | Â | Â | 0.056* | Â | <0.001 |
   Negative | 57 | 8.47 ± 2.27 |  | 10.50 ± 3.42 |  |
   Positive | 66 | 7.65 ± 2.24 |  | 13.98 ± 3.10 |  |
LVI | Â | Â | 0.700 | Â | <0.001 |
   Negative | 83 | 8.08 ± 2.33 |  | 11.23 ± 3.29 |  |
   Positive | 40 | 7.91 ± 2.22 |  | 14.36 ± 3.44 |  |
VI | Â | Â | 0.905 | Â | <0.001 |
   Negative | 86 | 8.00 ± 2.38 |  | 11.65 ± 3.81 |  |
   Positive | 37 | 8.05 ± 2.67 |  | 14.24 ± 2.53 |  |
TNM stage | Â | Â | 0.067 | Â | <0.001 |
   I - II | 71 | 8.34 ± 2.42 |  | 11.33 ± 3.29 |  |
   III - IV | 52 | 7.58 ± 2.01 |  | 13.92 ± 3.66 |  |
VEGF-A expression | Â | Â | 0.527 | Â | 0.091 |
   Low | 44 | 7.84 ± 2.51 |  | 11.68 ± 3.54 |  |
   High | 79 | 8.26 ± 2.21 |  | 12.84 ± 3.69 |  |
VEGF-C expression | Â | Â | 0.092* | Â | 0.003 |
   Low | 42 | 7.55 ± 2.37 |  | 11.06 ± 3.26 |  |
   High | 81 | 8.00 ± 2.34 |  | 13.13 ± 3.69 |  |
VEGF-D expression | Â | Â | 0.514 | Â | 0.005 |
   Low | 72 | 7.90 ± 2.47 |  | 11.65 ± 3.44 |  |
   High | 51 | 8.18 ± 1.99 |  | 13.53 ± 3.73 |  |