Table 4 Survival analysis on CD133 protein expression and clinicopathological parameters by Cox model (n = 99 cases)

Gender

0.021

0.009

0.623

1

0.159

1.135

0.315~1.872

Age(year)

0.010

0.013

0.554

1

0.457

1.010

0.991~1.681

Tumor diameter (cm)

-0.076

0.070

1.186

1

0.276

0.927

0.872~1.561

Invasion depth

0.288

0.343

0.703

1

0.402

1.334

0.318~6.105

Histological grade

0.001

0.182

0.000

1

0.994

1.001

1.169~4.669

Lymph node metastasis

0.867

0.361

0.035

1

0.042

1.978

1.987~10.238

TNM stage

0.739

0.479

0.249

1

0.046

2.187

1.889~;15.312

Lymphatic vessel infiltration

0.871

0.592

2.168

1

0.141

2.390

0.987~6.558

Vascular infiltration

0.218

0.560

0.152

1

0.697

1.244

2.377~9.912

CD133 protein expression

0.894

0.449

3.966

1

0.046

2.445

2.118~16.381