1 = tumor
2 = CANs

1 = man
2 = female

1 = high degree
2 = mid degree
3 = low degree

1 = negative
2 = positive

1 = I-II
2 = III-IV

1 = age≤58
2 = age>59

1 = D1-D2
2 = D3-D4

1 = low express
2 = high express

1 = Survival or loss of follow-up
2 = died

0 = VEGF-MMP9-
1 = VEGF+MMP9- VEGF-MMP9+
2 = VEGF+MMP9+

0 = or -
1 = and +